# OP Mainnet Markdown version of https://ethbeat.org/layer2s/projects/op-mainnet ## Summary **Warning:** There are impactful changes and part of the information might be outdated. - Total Value Secured: $1.56 B (-8.43% compared to seven days ago; canonically bridged $951.94 M, natively minted $297.95 M, externally bridged $313.14 M; 20.0% with additional trust assumptions compared to the tokens involved and the Stage assigned to the project's canonical messaging bridge) - TVS by asset: ETH & derivatives $531.03 M (33.9%), Stablecoins $408.68 M (26.1%), BTC & derivatives $60.75 M (3.88%), Other $562.56 M (35.9%) - Associated tokens: OP: $254.56 M (16.2% of TVS) - Past day UOPS: 11.76 (-14.3% compared to seven days ago) - Stage: Stage 1 - Gas token: ETH - Type: Optimistic Rollup - Purpose: Universal - Host chain: Ethereum - Chain ID: 10 - Privacy projects: Fluidkey - Last 24h cross-chain volume: $42.61 M - Last 24h cross-chain transfers: 5.30 K - Interop protocols used (last 24h volume): [LayerZero](https://ethbeat.org/interop/protocols/layerzero) ($18.77 M), [CCTP v2](https://ethbeat.org/interop/protocols/cctpv2) ($10.86 M), [OP Canonical](https://ethbeat.org/interop/protocols/op-mainnet) ($9.74 M), and 17 more - Tokens by volume (last 24h): [USDT](https://ethbeat.org/tokens/xxeNQv/usdt) ($22.97 M), [USDC](https://ethbeat.org/tokens/9HN5PN/usdc) ($13.07 M), [weETH](https://ethbeat.org/tokens/aP73dU/weeth) ($2.05 M), and 47 more ### Risks - Sequencer failure: Self sequence (12h delay; sentiment: good) - State validation: Fraud proofs (INT) (3d 12h challenge period + 3d 12h execution delay; sentiment: good) - Data availability: Onchain (sentiment: good) - Exit window: None (sentiment: bad) - Proposer failure: Self propose (sentiment: good) ### About OP Mainnet is an EVM-equivalent Optimistic Rollup. It aims to be fast, simple, and secure. ### Links - Website: https://optimism.io/ - Bridge: https://app.optimism.io - Docs: https://docs.optimism.io/, https://specs.optimism.io/, https://community.optimism.io - Explorer: https://optimistic.etherscan.io, https://optimism.blockscout.com/, https://mainnet.superscan.network - Repository: https://github.com/ethereum-optimism/optimism - Social: https://x.com/Optimism, https://optimism.mirror.xyz/, https://twitter.com/OPLabsPBC, https://youtube.com/playlist?list=PLX_rXoLYCf5HqTWygUfoMfzRirGz5lekH, https://linkedin.com/company/optimism-foundation, https://twitch.tv/optimismpbc, https://discord.gg/optimism - Other: https://rollup.codes/optimism, https://growthepie.com/chains/optimism - Contracts explorer (Disco): https://disco.l2beat.com/ui/p/optimism ### Badges - EVM: This project uses the Ethereum Virtual Machine to run its smart contracts and supports the Solidity programming language - Ethereum with blobs: This project is posting its data to Ethereum as blobs - Built on OP Stack: The project is built on the OP Stack - Part of the Superchain: The project is part of the Superchain, meaning it's included in the Superchain registry or uses the Superchain config - Governance: This project features token voting ## Value Secured The interactive TVS charts are shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#tvs). Token by token: [TVS breakdown](https://ethbeat.org/layer2s/projects/op-mainnet/tvs-breakdown). - [TVS chart (JSON)](https://ethbeat.org/api/scaling/tvs/op-mainnet) - [TVS breakdown by token (JSON)](https://ethbeat.org/api/scaling/tvs/op-mainnet/breakdown) ## Volume and flows The interactive flows chart is shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#interop-flows). ## Activity The interactive activity chart is shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#activity). - [Activity chart (JSON)](https://ethbeat.org/api/scaling/activity/op-mainnet) ## Onchain costs The section shows the operating costs that L2s pay to Ethereum. The interactive costs chart is shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#onchain-costs). ### Tracked transactions #### Batch submissions - transfer: 2021-11-11 21:16 UTC - now; currently used; from: [0x6887246668a3b87F54DeB3b94Ba47a6f63F32985](https://etherscan.io/address/0x6887246668a3b87F54DeB3b94Ba47a6f63F32985); to: [0xFF00000000000000000000000000000000000010](https://etherscan.io/address/0xFF00000000000000000000000000000000000010) #### State updates - functionCall: 2022-08-16 15:03 UTC - 2024-06-10 17:09 UTC; historical; address: [0xdfe97868233d1aa22e815a266982f2cf17685a27](https://etherscan.io/address/0xdfe97868233d1aa22e815a266982f2cf17685a27); selector: 0x9aaab648; signature: `function proposeL2Output(bytes32 _outputRoot, uint256 _l2BlockNumber, bytes32 _l1Blockhash, uint256 _l1BlockNumber)` - functionCall: 2024-06-10 17:09 UTC - now; currently used; address: [0xe5965Ab5962eDc7477C8520243A95517CD252fA9](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9); selector: 0x82ecf2f6; signature: `function create(uint32 _gameType, bytes32 _rootClaim, bytes _extraData) payable returns (address proxy_)` ## Data posted This section shows how much data the project publishes to Ethereum over time. It leaves out data posted to other data-availability (DA) layers. The project currently posts data to [Ethereum](https://ethbeat.org/projects/ethereum). The interactive data posted chart is shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#data-posted). ### Tracked transactions #### Blob submissions - DA layer Ethereum: from block 0 to now; currently used; inbox: [0xFF00000000000000000000000000000000000010](https://etherscan.io/address/0xFF00000000000000000000000000000000000010); sequencers: [0x6887246668a3b87F54DeB3b94Ba47a6f63F32985](https://etherscan.io/address/0x6887246668a3b87F54DeB3b94Ba47a6f63F32985) ## Liveness This section shows how "live" the project's operators are by displaying how frequently they submit transactions of the selected type. It also highlights anomalies - significant deviations from their typical schedule. No ongoing anomalies detected. The interactive liveness chart is shown on [the HTML page](https://ethbeat.org/layer2s/projects/op-mainnet#liveness). ### Tracked transactions #### Batch submissions - transfer: 2021-11-11 21:16 UTC - now; currently used; from: [0x6887246668a3b87F54DeB3b94Ba47a6f63F32985](https://etherscan.io/address/0x6887246668a3b87F54DeB3b94Ba47a6f63F32985); to: [0xFF00000000000000000000000000000000000010](https://etherscan.io/address/0xFF00000000000000000000000000000000000010) #### State updates - functionCall: 2022-08-16 15:03 UTC - 2024-06-10 17:09 UTC; historical; address: [0xdfe97868233d1aa22e815a266982f2cf17685a27](https://etherscan.io/address/0xdfe97868233d1aa22e815a266982f2cf17685a27); selector: 0x9aaab648; signature: `function proposeL2Output(bytes32 _outputRoot, uint256 _l2BlockNumber, bytes32 _l1Blockhash, uint256 _l1BlockNumber)` - functionCall: 2024-06-10 17:09 UTC - now; currently used; address: [0xe5965Ab5962eDc7477C8520243A95517CD252fA9](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9); selector: 0x82ecf2f6; signature: `function create(uint32 _gameType, bytes32 _rootClaim, bytes _extraData) payable returns (address proxy_)` ## Milestones & Incidents - 2025-11-25: [Upgrade 17 - Jovian Hardfork and Fusaka Readiness](https://vote.optimism.io/proposals/3118571676657709551286937570456546163542507117143005939043790253732885172699). A protocol upgrade improving fee mechanisms and preparing the OP Stack for the Fusaka hardfork. - 2025-07-14: [Upgrade #16 Interop Contracts + Upgrades to Cannon](https://vote.optimism.io/proposals/42233809968417684816035432917226202543057967150073565253597304573923844823222). Optimism readies Superchain interop and boosts security, scale, and Cannon. - 2025-04-12: [Upgrade #15 Isthmus Hard Fork](https://vote.optimism.io/proposals/8705916809146420472067303211131851783087744913535435360574720946039078686841). Optimism introduces the Isthmus hard fork and its features. - 2025-04-12: [Upgrade #14 Isthmus L1 Contracts + MT-Cannon](https://vote.optimism.io/proposals/95528263587371532982719325402371584327430753545162858644972401153516332664853). Optimism introduces MT-Cannon and the Operator Fee. - 2025-03-22: [Upgrade #13 OPCM](https://vote.optimism.io/proposals/84511922734478887667300419900648701566511387783615524992018614345859900443455). Optimism introduces a new system for upgrading L1 contracts across the Superchain. - 2025-03-05: [Maintenance Upgrade L1 Pectra Readiness](https://vote.optimism.io/proposals/38506287861710446593663598830868940900144818754960277981092485594195671514829). Optimism prepares for Ethereum's pectra upgrade. - 2025-01-09: [Upgrade #11 Holocene](https://vote.optimism.io/proposals/50775220738623167695573388814398057544437236582252674861818535424434586434657). The Holocene Network Upgrade contains three changes. - 2024-12-22: [Governor Upgrade #3](https://vote.optimism.io/proposals/20127877429053636874064552098716749508236019236440427814457915785398876262515). Optimism enables onchain treasury execution. - 2024-08-28: [Upgrade #10 Granite](https://vote.optimism.io/proposals/46514799174839131952937755475635933411907395382311347042580299316635260952272). Fraud proofs reenabled after Granite upgrade successfully passes through OP governance. - 2024-08-16 (incident): [Fallback to permissioned proposals for 26 days](https://x.com/Optimism/status/1824560759747256596). OP Mainnet preventively disables the fraud proof system due to a bug for 26 days. - 2024-06-10: [OP Mainnet becomes Stage 1](https://x.com/Optimism/status/1800256837088145799). OP Mainnet introduces fraud proofs and updates permissions. - 2024-03-14: [OP Mainnet starts using blobs](https://twitter.com/Optimism/status/1768235284494450922). OP Mainnet starts publishing data to blobs. - 2024-03-14: [Network Upgrade #5: Ecotone](https://vote.optimism.io/proposals/95119698597711750186734377984697814101707190887694311194110013874163880701970). Optimism adopts EIP-4844. - 2023-10-03: [Fault Proof System is live on OP Goerli](https://optimism.io/blog/the-op-stack-s-fault-proof-system-is-live-on-op-goerli). Fraud Proof system is live on Goerli. - 2023-06-06: [Mainnet migration to Bedrock](https://oplabs.notion.site/Bedrock-Mission-Control-EXTERNAL-fca344b1f799447cb1bcf3aae62157c5). OP Mainnet, since Jun 2023 is running Bedrock. - 2022-10-17: [OP Stack Introduced](https://optimism.mirror.xyz/fLk5UGjZDiXFuvQh6R_HscMQuuY9ABYNF7PI76-qJYs). OP Stack, modular, open-sourced blueprint on how to build scalable blockchains. - 2022-05-31: [OP token airdrop](https://optimism.mirror.xyz/qvd0WfuLKnePm1Gxb9dpGchPf5uDz5NSMEFdgirDS4c). The first round of OP token airdrop. - 2021-12-16: [Mainnet for everyone](https://medium.com/ethereum-optimism/all-gas-no-brakes-8b0f32afd466). Whitelist got removed, there are no restrictions on who can transact with the network. - 2021-11-12 (incident): [Optimism removes OVM fraud proofs](https://twitter.com/optimismfnd/status/1458953238867165192?s=21&t=cQ0NPREYt-u1rP7OiPFKUg). Network upgrade to OVM 2.0 and removal of fraud-proof system. - 2021-08-19: [Community Launch](https://medium.com/ethereum-optimism/community-launch-7c9a2a9d3e84). All smart contracts allowed after prior approval. - 2021-01-16: [Mainnet Soft Launch](https://medium.com/ethereum-optimism/mainnet-soft-launch-7cacc0143cd5). Only selected contracts like Synthetix and Uniswap are available. ## Risk summary ### Funds can be stolen if 1. a contract receives a malicious code upgrade. Both regular and emergency upgrades must be approved by both the Security Council and the Foundation. There is no delay on regular upgrades. ### MEV can be extracted if 2. the operator exploits their centralized position and frontruns user transactions. ## Risk analysis ### Sequencer failure Self sequence (12h delay; sentiment: good) In the event of a sequencer failure, users can force transactions to be included in the project's chain by sending them to L1. There can be up to a 12h delay on this operation. ### State validation Fraud proofs (INT) (3d 12h challenge period + 3d 12h execution delay; sentiment: good) Fraud proofs allow actors watching the chain to prove that the state is incorrect. Interactive proofs (INT) require multiple transactions over time to resolve. ### Data availability Onchain (sentiment: good) All of the data needed for proof construction is published on Ethereum L1. ### Exit window None (sentiment: bad) There is no exit window for users to exit in case of unwanted upgrades as they are initiated by the Security Council with instant upgrade power and without proper notice. ### Proposer failure Self propose (sentiment: good) Anyone can be a Proposer and propose new roots to the L1 bridge. ## Stage OP Mainnet is a Stage 1 Optimistic Rollup. **The project passes the walkaway test**: users can exit in the presence of malicious operators even if the Security Council disappears. ### Scope of assessment #### In scope - L1 core contracts - L2 core contracts - Gas token - Derivation logic spec - Source code to program hash mapping #### Not in scope - Source code implementation of the spec - Sequencer policy - Non-gas tokens ### Stage 0 6 requirements met. - Met: A complete and functional proof system is deployed. - Met: There are at least 5 external actors who can submit fraud proofs. - Met: The project calls itself a rollup. - Met: State roots are posted to Ethereum L1. - Met: Inputs for the state transition function are posted to Ethereum L1. - Met: A source-available node exists that can recreate the state from Ethereum L1 data. Please note that the ETHBEAT team has not verified the validity of the node source code. [View code](https://github.com/ethereum-optimism/optimism/tree/develop/op-node) ### Stage 1 5 requirements met. **Principle** - Met: Compromising ≥75% of the Security Council is the only way (other than bugs) for a rollup to indefinitely block an L2→L1 message (e.g. a withdrawal) or push an invalid L2→L1 message (e.g. an invalid withdrawal) with a <7d exit window. **Guidelines** - Met: Users are able to exit without the help of the permissioned operators. - Met: In case of an unwanted upgrade by actors more centralized than a Security Council, users have at least 7d to exit. - Met: The Security Council is properly set up. - Met: The sources of all programs used are public and program hashes can be independently regenerated. ### Stage 2 2 issues need fixing. - Met: Fraud proof submission is open to everyone. - Issue: Upgrades unrelated to onchain provable bugs provide less than 30d to exit. - Issue: The Security Council's actions are not confined to onchain provable bugs. [Learn more about Stages](https://ethbeat.org/stages). Please keep in mind that these stages do not reflect project security, this is an opinionated assessment of project maturity based on subjective criteria, created with a goal of incentivizing projects to push toward better decentralization. Each team may have taken different paths to achieve this goal. ## Data availability ### All data required for proofs is published on chain All the data that is used to construct the system state is published on chain in the form of cheap blobs or calldata. This ensures that it will be available for enough time. **References** - [Derivation: Batch submission - OP Mainnet specs](https://github.com/ethereum-optimism/specs/blob/main/specs/protocol/derivation.md#batch-submission) - [BatchInbox - address](https://etherscan.io/address/0xFF00000000000000000000000000000000000010#code) - [OptimismPortal2.sol - source code, depositTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) Learn more about the DA layer here: [Ethereum](https://ethbeat.org/projects/ethereum) ## State derivation ### Node software The rollup node is composed of two software components: [op-node](https://github.com/ethereum-optimism/optimism/tree/develop/op-node), implementing consensus related logic, and [op-geth](https://github.com/ethereum-optimism/op-geth), implementing execution logic. The configuration file can be found [here](https://github.com/ethereum-optimism/superchain-registry/blob/main/superchain/configs/mainnet/op.toml). ### Compression scheme Data batches are compressed using the [zlib](https://github.com/madler/zlib) algorithm with best compression level. ### Genesis state Since OP Mainnet has migrated from the OVM to Bedrock, a node must be synced using a data directory that can be found [here](https://docs.optimism.io/builders/node-operators/management/snapshots). To reproduce the migration itself, see this [guide](https://optimism.io/blog/here-s-how-you-can-reproduce-op-mainnet-s-migration-to-bedrock). ### Data format The format specification of Sequencer's data batches can be found [here](https://optimism.io/blog/here-s-how-you-can-reproduce-op-mainnet-s-migration-to-bedrock). ## State validation ![A diagram of the state validation](https://ethbeat.org/static/images/state-validation/opfp.993d8228.png) Updates to the system state can be proposed and challenged by anyone who has sufficient funds. If a state root passes the challenge period, it is optimistically considered correct and made actionable for withdrawals. ### State root proposals Proposers submit state roots as children of the latest confirmed state root (called anchor state), by calling the `create` function in the DisputeGameFactory. A state root can have multiple conflicting children. Each proposal requires a stake, currently set to 0.08 ETH, that can be slashed if the proposal is proven incorrect via a fraud proof. Stakes can be withdrawn only after the proposal has been confirmed. A state root gets confirmed if the challenge period has passed and it is not countered. **References** - [OP stack specification: Fault Dispute Game](https://specs.optimism.io/fault-proof/stage-one/fault-dispute-game.html#fault-dispute-game) ### Challenges Challenges are opened to disprove invalid state roots using bisection games. Each bisection move requires a stake that increases expontentially with the depth of the bisection, with a factor of 1.09493. The maximum depth is 73, and reaching it therefore requires a cumulative stake of 691.23 ETH from depth 0. Actors can participate in any challenge by calling the `defend` or `attack` functions, depending whether they agree or disagree with the latest claim and want to move the bisection game forward. Actors that disagree with the top-level claim are called challengers, and actors that agree are called defenders. Each actor might be involved in multiple (sub-)challenges at the same time, meaning that the protocol operates with [full concurrency](https://medium.com/l2beat/fraud-proof-wars-b0cb4d0f452a). Challengers and defenders alternate in the bisection game, and they pass each other a clock that starts with 3d 12h. If a clock expires, the claim is considered defeated if it was countered, or it gets confirmed if uncountered. Since honest parties can inherit clocks from malicious parties that play both as challengers and defenders (see [freeloader claims](https://specs.optimism.io/fault-proof/stage-one/fault-dispute-game.html#freeloader-claims)), an inherited clock with too little time remaining is generally extended by 3h. The extension is 6h when the next claim is immediately before split depth 30, and 1d 3h (the standard extension plus the 1d oracle challenge period) immediately before the last depth. Along a full-depth path, cumulative extensions can therefore add up to 10d 3h. Since unconfirmed state roots are independent of one another, users can decide to exit with a subsequent confirmed state root if the previous one is delayed. Winners get the entire losers' stake, meaning that sybils can potentially play against each other at no cost. The final instruction found via the bisection game is then executed onchain in the MIPS one step prover contract who determines the winner. The protocol does not enforce valid bisections, meaning that actors can propose correct initial claims and then provide incorrect midpoints. The protocol can be subject to resource exhaustion attacks ([Spearbit 5.1.3](https://github.com/ethereum-optimism/optimism/blob/develop/docs/security-reviews/2024_08_Fault-Proofs-No-MIPS_Spearbit.pdf)). **References** - [Fraud Proof Wars: OPFP](https://medium.com/l2beat/fraud-proof-wars-b0cb4d0f452a) ### Program Hashes #### OP Kona interop absolute prestate v1.7.0-rc.2 (cannon64-kona-interop) A commitment to the initial state of the OP stack fault proof program of Kona client, in the interop variant run by the super fault dispute game (respected game type 9). - Hash: `0x031ac6f15c19010da258f5cb633ef6ca9318c2d0f244bea6b2045ce6b790e1df` - Repository: https://github.com/ethereum-optimism/optimism/tree/kona-client/v1.7.0-rc.2/rust/kona - Verification: successful - Used in: [OP Mainnet](https://ethbeat.org/layer2s/projects/op-mainnet), [Ink](https://ethbeat.org/layer2s/projects/ink), [Unichain](https://ethbeat.org/layer2s/projects/unichain) ##### Verification steps 1. Install [just](https://just.systems). 2. Install docker [https://docs.docker.com/get-started/get-docker/](https://docs.docker.com/get-started/get-docker/) and make sure it is running. 3. Check out the correct commit of the [optimism](https://github.com/ethereum-optimism/optimism) repo (tag `kona-client/v1.7.0-rc.2`): `git checkout 64b043ea5bbca9bc6e57e0f1c8df0404b4cf5f68`. 4. From the monorepo root run `just reproducible-prestate`. A single docker build produces both variants and prints their hashes; this prestate is the `kona-client-int` (interop) one. ## Upgrades & Governance ![A diagram of the upgrades and governance](https://ethbeat.org/static/images/upgrades-and-governance/op-mainnet.04e01d60.png) All contracts are upgradable by the `SuperchainProxyAdmin` which is controlled by a 2/2 multisig composed by the Optimism Foundation and a Security Council. The Guardian role is assigned to the Security Council multisig, with a Safe Module that limits the Optimism Foundation to act through it to stop withdrawals in the whole Superchain or specific individual chains. Each pause automatically expires after 3 months if not extended or unpaused by the Security Council. The Security Council can remove the module if the Foundation becomes malicious. The single Sequencer actor can be modified by the `OpFoundationOperationsSafe` via the `SystemConfig` contract. The SuperchainProxyAdminOwner can recover dispute bonds in case of bugs that would distribute them incorrectly. At the moment, for regular upgrades, the DAO signals its intent by voting on upgrade proposals, but has no direct control over the upgrade process. ### Governance profile #### Security Council | Property | Value | | --- | --- | | Composition | **10/13** — Gnosis Safe with cohorts of 7 + 6, 12-month staggered terms. Token-House-elected via Agora with Optimism Foundation eligibility screening (KYC/AML, geographic and organisational diversity). | | Members public | **Entities only** — elected entity names are public; 1:1 entity-to-address mapping deliberately not published (Foundation privacy policy). Current Cohort A (Feb 2026 – Feb 2027): Agora, Velodrome, Cyfrin, pablito.eth, Mariano, Uniswap Foundation, Emiliano. Cohort B's initial slate (Feb 2025): L2BEAT, OP Labs PBC, Coinbase Technologies, Test in Prod, Ink Foundation/Kraken, World Foundation. | | Charter | [Security Council Charter v0.1](https://github.com/ethereum-optimism/OPerating-manual/blob/main/Security%20Council%20Charter%20v0.1.md) — defines 75% threshold, emergency response, Token House removal, LivenessModule failsafe (control reverts to Foundation Upgrade Safe if signers drop below 8). | | Can bypass DAO? | **Yes** — emergency response measures may be taken without specific Governance approval (Charter v0.1). The SC + Foundation Upgrade Safe (2/2 SuperchainProxyAdminOwner) hold the actual upgrade keys and can execute at any time. | | DAO can override SC? | **Veto, plus member removal** — Token House and Citizens' House can veto DAB-approved upgrades during the 7-day veto window (subject to participation thresholds). Token House can remove SC members by simple majority within one voting cycle (≤3 weeks) for Code of Conduct violations. LivenessModule auto-removes signers inactive ≥3 months 8 days; if signer count drops below 8, control reverts to the Foundation Upgrade Safe. | #### Upgrades | Property | Value | | --- | --- | | Normal upgrade path | Technical review by the 7-member elected Developer Advisory Board (DAB, 5/7 quorum for approval) → Release on Sepolia → **7-day veto window** during which Token House and/or Citizens' House can veto a DAB-approved upgrade or override a DAB rejection if participation thresholds are met (17% with two groups, 14% with three, 11% with four) → If not vetoed, SC + Foundation Upgrade Safe (2/2 SuperchainProxyAdminOwner) co-sign the L1 transaction → Execute. Maintenance upgrades use a shortened path. Live since Aug 1, 2025. | | Emergency upgrade path | **SC + Foundation Upgrade Safe (2/2), instant** — "may preemptively address actual or anticipated bugs, defects, or stability issues without specific Governance approval" (Charter v0.1). No DAB review, no veto window. Mandatory after-the-fact public retrospective. | | Exit window | **None** — upgrades take effect as soon as they are co-signed by the 2/2 SuperchainProxyAdminOwner, with no onchain delay or prior notice, so users cannot exit ahead of an unwanted upgrade. | #### Token governance | Property | Value | | --- | --- | | Governance token | `OP` — ~4.29B initial supply, up to 2%/yr inflation (cap fixed in the Operating Manual; changes require a 76% Inflation proposal). 1 OP = 1 vote, delegated. | | Voting venue | [Agora](https://vote.optimism.io/) for binding on-chain Token House votes. [Snapshot](https://snapshot.org/#/opcollective.eth) for Citizens' House signaling, Protocol Upgrade vetoes, and some Reflection Period votes. Forum stage: [gov.optimism.io](https://gov.optimism.io). | | Proposal threshold | **No OP minimum** — submission requires explicit approval from 4 of the top-100 delegates on the discussion thread (Operating Manual). Citizens' House analog: 4 Citizens. Foundation-initiated proposals require no approvals. Note: protocol upgrades since Aug 2025 originate from the DAB rather than the Token House. | | Quorum | **30%** for Token House proposals. Veto-window participation thresholds for protocol upgrades: 17% (two groups voting), 14% (three groups), 11% (four groups). | | Execution model | **DAB-gated approval + 2/2 Safe signs** — DAB approves, veto window passes, then SC + Foundation Upgrade Safe co-sign the L1 transaction. Token House and Citizens' House signal/veto on-chain via Agora and Snapshot but do not directly trigger the L1 state change. No permissionless `execute()`. | ### Past upgrades The metrics include upgrades on the currently used proxy contracts. Historical proxy contracts and changes of such are not included. - Count of upgrades: 132 - Last upgrade: 1mo 10d ago - Avg upgrade interval: 4mo 1d - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA)) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x1005217ad392DC64CEf501FA1777A27D42166748)) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504)) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xE440CC08A71694C8229323803F59024E3144630e)) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-07-08 16:00 UTC, upgrade of [L2CrossDomainMessenger](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2CrossDomainMessenger](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://optimistic.etherscan.io/address/0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96#code) - 2026-07-08 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://optimistic.etherscan.io/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/oeth:0x547d0fba434877D7237d511cF87FABe2ee26b152)) - 2026-07-08 16:00 UTC, upgrade of [L2StandardBridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2StandardBridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://optimistic.etherscan.io/address/0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1#code) - 2026-07-08 16:00 UTC, upgrade of [SequencerFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [SequencerFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://optimistic.etherscan.io/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC20Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC20Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://optimistic.etherscan.io/address/0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9#code) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://optimistic.etherscan.io/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#code) ([diff](https://disco.l2beat.com/diff/oeth:0x5a7749f83b81B301cAb5f48EB8516B986DAef23D/oeth:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833)) - 2026-07-08 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://optimistic.etherscan.io/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) ([diff](https://disco.l2beat.com/diff/oeth:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/oeth:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56)) - 2026-07-08 16:00 UTC, deployment of [L2ToL1MessagePasser](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000016#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://optimistic.etherscan.io/address/0x27E51B2254433A3284D9ba73Ea551C397DB2a124#code) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC721Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf43862B9d814BB4504158CecCB0b74b31265e4eE/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC721Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://optimistic.etherscan.io/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) - 2026-07-08 16:00 UTC, upgrade of [L2ProxyAdmin](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code): transaction [0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c](https://optimistic.etherscan.io/tx/0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://optimistic.etherscan.io/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) ([diff](https://disco.l2beat.com/diff/oeth:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F/oeth:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F)) - 2026-07-08 16:00 UTC, deployment of [L2ProxyAdmin](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://optimistic.etherscan.io/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) - 2026-07-08 16:00 UTC, upgrade of [BaseFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [BaseFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) - 2026-07-08 16:00 UTC, upgrade of [L1FeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L1FeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) - 2026-07-08 16:00 UTC, upgrade of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xEddf416c7159387cc6DF3015700F79Cfb8911373/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, upgrade of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xEddf416c7159387cc6DF3015700F79Cfb8911373](https://optimistic.etherscan.io/address/0xEddf416c7159387cc6DF3015700F79Cfb8911373#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537/oeth:0xEddf416c7159387cc6DF3015700F79Cfb8911373)) - 2026-07-08 16:00 UTC, upgrade of [SchemaRegistry](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000020#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://optimistic.etherscan.io/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) ([diff](https://disco.l2beat.com/diff/oeth:0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13/oeth:0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34)) - 2026-07-08 16:00 UTC, upgrade of [EAS](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000021#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://optimistic.etherscan.io/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088/oeth:0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6)) - 2026-06-25 23:05 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x42Ad0173051225Ac784100e9acD43349707F4db9](https://etherscan.io/address/0x42Ad0173051225Ac784100e9acD43349707F4db9#code) ([diff](https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9)) - 2026-06-25 23:05 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2](https://etherscan.io/address/0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2)) - 2026-06-25 23:05 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-06-25 23:05 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550](https://etherscan.io/address/0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550#code) ([diff](https://disco.l2beat.com/diff/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550)) - 2026-06-25 23:05 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-06-25 23:05 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-06-25 23:05 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) - 2026-06-25 23:05 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-06-25 23:05 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2026-06-25 23:05 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-02-09 20:10 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xd392c27B84b1cA776528F2704BC67B82a62132d2](https://etherscan.io/address/0xd392c27B84b1cA776528F2704BC67B82a62132d2#code) ([diff](https://disco.l2beat.com/diff/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2)) - 2026-02-09 20:10 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B](https://etherscan.io/address/0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B#code) ([diff](https://disco.l2beat.com/diff/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B)) - 2026-02-09 20:10 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c](https://etherscan.io/address/0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c#code) ([diff](https://disco.l2beat.com/diff/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c)) - 2026-02-09 20:10 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2026-02-09 20:10 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2026-02-09 20:10 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5](https://etherscan.io/address/0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5)) - 2026-02-09 20:10 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-12-02 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9](https://optimistic.etherscan.io/tx/0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9), implementations: [0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1](https://optimistic.etherscan.io/address/0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1#code) ([diff](https://disco.l2beat.com/diff/oeth:0x93e57A196454CB919193fa9946f14943cf733845/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1)) - 2025-12-02 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a](https://optimistic.etherscan.io/tx/0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a), implementations: [0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C](https://optimistic.etherscan.io/address/0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C#code) ([diff](https://disco.l2beat.com/diff/oeth:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12/oeth:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C)) - 2025-11-25 17:46 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED](https://etherscan.io/address/0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED#code) ([diff](https://disco.l2beat.com/diff/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED)) - 2025-11-25 17:46 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x7Cf803296662e8C72A6C1d6450572209aCF7f202](https://etherscan.io/address/0x7Cf803296662e8C72A6C1d6450572209aCF7f202#code) ([diff](https://disco.l2beat.com/diff/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202)) - 2025-11-25 17:46 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x74Fac1D45B98bae058F8F566201c9A81B85C7D50](https://etherscan.io/address/0x74Fac1D45B98bae058F8F566201c9A81B85C7D50#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50)) - 2025-11-25 17:46 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0xb08Cc720F511062537ca78BdB0AE691F04F5a957](https://etherscan.io/address/0xb08Cc720F511062537ca78BdB0AE691F04F5a957#code) ([diff](https://disco.l2beat.com/diff/eth:0xCe28685EB204186b557133766eCA00334EB441E4/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957)) - 2025-11-25 17:46 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-11-25 17:46 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x7f1d12fB2911EB095278085f721e644C1f675696/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-11-25 17:46 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x5493f4677A186f64805fe7317D6993ba4863988F/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-10-02 16:35 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557](https://etherscan.io/address/0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557#code) ([diff](https://disco.l2beat.com/diff/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557)) - 2025-10-02 16:35 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x381E729FF983FA4BCEd820e7b922d79bF653B999](https://etherscan.io/address/0x381E729FF983FA4BCEd820e7b922d79bF653B999#code) ([diff](https://disco.l2beat.com/diff/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999)) - 2025-10-02 16:35 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-10-02 16:35 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x22D12E0FAebD62d429514A65EBAe32dd316c12D6](https://etherscan.io/address/0x22D12E0FAebD62d429514A65EBAe32dd316c12D6#code) ([diff](https://disco.l2beat.com/diff/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6)) - 2025-10-02 16:35 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x7f1d12fB2911EB095278085f721e644C1f675696](https://etherscan.io/address/0x7f1d12fB2911EB095278085f721e644C1f675696#code) ([diff](https://disco.l2beat.com/diff/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F/eth:0x7f1d12fB2911EB095278085f721e644C1f675696)) - 2025-10-02 16:35 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E)) - 2025-07-24 17:47 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa](https://etherscan.io/address/0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa#code) ([diff](https://disco.l2beat.com/diff/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa)) - 2025-07-24 17:47 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a](https://etherscan.io/address/0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a#code) ([diff](https://disco.l2beat.com/diff/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a)) - 2025-07-24 17:47 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-07-24 17:47 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xCe28685EB204186b557133766eCA00334EB441E4](https://etherscan.io/address/0xCe28685EB204186b557133766eCA00334EB441E4#code) ([diff](https://disco.l2beat.com/diff/eth:0x4da82a327773965b8d4D85Fa3dB8249b387458E7/eth:0xCe28685EB204186b557133766eCA00334EB441E4)) - 2025-07-24 17:47 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54](https://etherscan.io/address/0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54#code) ([diff](https://disco.l2beat.com/diff/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54)) - 2025-07-24 17:47 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F](https://etherscan.io/address/0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F#code) ([diff](https://disco.l2beat.com/diff/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F)) - 2025-07-24 17:47 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) - 2025-07-24 17:47 UTC, deployment of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x784d2F03593A42A6E4676A012762F18775ecbBe6](https://etherscan.io/address/0x784d2F03593A42A6E4676A012762F18775ecbBe6#code) - 2025-05-09 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30](https://optimistic.etherscan.io/tx/0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30), implementations: [0x93e57A196454CB919193fa9946f14943cf733845](https://optimistic.etherscan.io/address/0x93e57A196454CB919193fa9946f14943cf733845#code) ([diff](https://disco.l2beat.com/diff/oeth:0xa919894851548179A0750865e7974DA599C0Fac7/oeth:0x93e57A196454CB919193fa9946f14943cf733845)) - 2025-05-09 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd](https://optimistic.etherscan.io/tx/0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd), implementations: [0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12](https://optimistic.etherscan.io/address/0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12#code) ([diff](https://disco.l2beat.com/diff/oeth:0x07dbe8500fc591d1852B76feE44d5a05e13097Ff/oeth:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12)) - 2025-05-09 16:00 UTC, deployment of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xf162acc8ebbaf9237755736b62331a4817fe27bbbe3712f473ecfa8fee499f7c](https://optimistic.etherscan.io/tx/0xf162acc8ebbaf9237755736b62331a4817fe27bbbe3712f473ecfa8fee499f7c), implementations: [0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537](https://optimistic.etherscan.io/address/0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537#code) - 2025-04-24 16:16 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x340f923E5c7cbB2171146f64169EC9d5a9FfE647](https://etherscan.io/address/0x340f923E5c7cbB2171146f64169EC9d5a9FfE647#code) ([diff](https://disco.l2beat.com/diff/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647)) - 2025-04-24 16:16 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0xB443Da3e07052204A02d630a8933dAc05a0d6fB4](https://etherscan.io/address/0xB443Da3e07052204A02d630a8933dAc05a0d6fB4#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4)) - 2025-04-24 16:16 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x5D5a095665886119693F0B41d8DFeE78da033e8B](https://etherscan.io/address/0x5D5a095665886119693F0B41d8DFeE78da033e8B#code) ([diff](https://disco.l2beat.com/diff/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B)) - 2025-04-24 16:16 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013](https://etherscan.io/address/0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013#code) ([diff](https://disco.l2beat.com/diff/eth:0x276d3730f219f7ec22274f7263180b8452B46d47/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013)) - 2025-04-02 16:50 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x760C48C62A85045A6B69f07F4a9f22868659CbCc](https://etherscan.io/address/0x760C48C62A85045A6B69f07F4a9f22868659CbCc#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc)) - 2025-04-02 16:50 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd](https://etherscan.io/address/0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd)) - 2025-04-02 16:50 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x4bbA758F006Ef09402eF31724203F316ab74e4a0](https://etherscan.io/address/0x4bbA758F006Ef09402eF31724203F316ab74e4a0#code) ([diff](https://disco.l2beat.com/diff/eth:0xc641A33cab81C559F2bd4b21EA34C290E2440C2B/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0)) - 2025-04-02 16:50 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x4da82a327773965b8d4D85Fa3dB8249b387458E7](https://etherscan.io/address/0x4da82a327773965b8d4D85Fa3dB8249b387458E7#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x4da82a327773965b8d4D85Fa3dB8249b387458E7)) - 2025-04-02 16:50 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231](https://etherscan.io/address/0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231)) - 2025-04-02 16:50 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x276d3730f219f7ec22274f7263180b8452B46d47](https://etherscan.io/address/0x276d3730f219f7ec22274f7263180b8452B46d47#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x276d3730f219f7ec22274f7263180b8452B46d47)) - 2025-04-02 16:50 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x5493f4677A186f64805fe7317D6993ba4863988F](https://etherscan.io/address/0x5493f4677A186f64805fe7317D6993ba4863988F#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x5493f4677A186f64805fe7317D6993ba4863988F)) - 2025-01-24 14:41 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350](https://etherscan.io/tx/0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2025-01-24 14:41 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350](https://etherscan.io/tx/0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350), implementations: [0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375](https://etherscan.io/address/0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375)) - 2024-10-11 16:21 UTC, upgrade of [wstETHEscrow](https://etherscan.io/address/0x76943C0D61395d8F2edF9060e1533529cAe05dE6#code): transaction [0xc7bc3019721ecf320698f2897b329d1930f64661100a5fa159181146088e03c2](https://etherscan.io/tx/0xc7bc3019721ecf320698f2897b329d1930f64661100a5fa159181146088e03c2), implementations: [0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4](https://etherscan.io/address/0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4#code) ([diff](https://disco.l2beat.com/diff/eth:0x29C5c51A031165CE62F964966A6399b81165EFA4/eth:0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4)) - 2024-07-10 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0x2f63bbe08a66796dde569281a58a53e0b0f64b7aa067297e9c70455fb8e375bc](https://optimistic.etherscan.io/tx/0x2f63bbe08a66796dde569281a58a53e0b0f64b7aa067297e9c70455fb8e375bc), implementations: [0xa919894851548179A0750865e7974DA599C0Fac7](https://optimistic.etherscan.io/address/0xa919894851548179A0750865e7974DA599C0Fac7#code) ([diff](https://disco.l2beat.com/diff/oeth:0xb528D11cC114E026F138fE568744c6D45ce6Da7A/oeth:0xa919894851548179A0750865e7974DA599C0Fac7)) - 2024-06-10 18:29 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0](https://etherscan.io/tx/0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x53c165169401764778F780a69701385eb0FF19B7/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 18:29 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0](https://etherscan.io/tx/0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0), implementations: [0x53c165169401764778F780a69701385eb0FF19B7](https://etherscan.io/address/0x53c165169401764778F780a69701385eb0FF19B7#code) ([diff](https://disco.l2beat.com/diff/eth:0x53c165169401764778F780a69701385eb0FF19B7/eth:0x53c165169401764778F780a69701385eb0FF19B7)) - 2024-06-10 16:42 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 16:42 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xF56D96B2535B932656d3c04Ebf51baBff241D886](https://etherscan.io/address/0xF56D96B2535B932656d3c04Ebf51baBff241D886#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886)) - 2024-06-10 16:42 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 16:42 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xe2F826324b2faf99E513D16D266c3F80aE87832B](https://etherscan.io/address/0xe2F826324b2faf99E513D16D266c3F80aE87832B#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B)) - 2024-05-16 19:17 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x2c16c813ff50e9e09a3c58508a9b90293c896f1f91534d09a5002f50bc8760ff](https://etherscan.io/tx/0x2c16c813ff50e9e09a3c58508a9b90293c896f1f91534d09a5002f50bc8760ff), implementations: [0xc641A33cab81C559F2bd4b21EA34C290E2440C2B](https://etherscan.io/address/0xc641A33cab81C559F2bd4b21EA34C290E2440C2B#code) - 2024-04-11 20:49 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1](https://etherscan.io/address/0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1)) - 2024-04-11 20:49 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D778797049FE9259d947D1ED8e5442226dFB589/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0x2D778797049FE9259d947D1ED8e5442226dFB589](https://etherscan.io/address/0x2D778797049FE9259d947D1ED8e5442226dFB589#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x2D778797049FE9259d947D1ED8e5442226dFB589)) - 2024-04-11 20:49 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65](https://etherscan.io/address/0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65)) - 2024-04-11 20:49 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d](https://etherscan.io/address/0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d)) - 2024-04-11 20:49 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846](https://etherscan.io/address/0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846)) - 2024-03-14 00:00 UTC, deployment of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xedbfdad1f44ea830b863eac45eca4408398351b30511826012882059625963d2](https://optimistic.etherscan.io/tx/0xedbfdad1f44ea830b863eac45eca4408398351b30511826012882059625963d2), implementations: [0xb528D11cC114E026F138fE568744c6D45ce6Da7A](https://optimistic.etherscan.io/address/0xb528D11cC114E026F138fE568744c6D45ce6Da7A#code) - 2024-03-14 00:00 UTC, deployment of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0x9f2b2d34dfa2cb55cceb9860cade0cb03cfbd7ff1dd07d48b4708b29a46b4a24](https://optimistic.etherscan.io/tx/0x9f2b2d34dfa2cb55cceb9860cade0cb03cfbd7ff1dd07d48b4708b29a46b4a24), implementations: [0x07dbe8500fc591d1852B76feE44d5a05e13097Ff](https://optimistic.etherscan.io/address/0x07dbe8500fc591d1852B76feE44d5a05e13097Ff#code) - 2024-02-26 21:44 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314](https://etherscan.io/address/0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314#code) ([diff](https://disco.l2beat.com/diff/eth:0x5efa852e92800D1C982711761e45c3FE39a2b6D8/eth:0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314)) - 2024-02-26 21:44 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de](https://etherscan.io/address/0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de#code) ([diff](https://disco.l2beat.com/diff/eth:0x28a55488fef40005309e2DA0040DbE9D300a64AB/eth:0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de)) - 2024-02-26 21:44 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6](https://etherscan.io/address/0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6#code) ([diff](https://disco.l2beat.com/diff/eth:0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43/eth:0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6)) - 2024-02-26 21:44 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b](https://etherscan.io/address/0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b#code) ([diff](https://disco.l2beat.com/diff/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2/eth:0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b)) - 2024-02-26 21:44 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD](https://etherscan.io/address/0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD#code) ([diff](https://disco.l2beat.com/diff/eth:0xaE849EFA4BcFc419593420e14707996936E365E2/eth:0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD)) - 2024-01-22 20:19 UTC, deployment of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x8ba0e42b89cde22310b644ed30fd44e4a348619a165a54c908e7dc341e9bbd0c](https://etherscan.io/tx/0x8ba0e42b89cde22310b644ed30fd44e4a348619a165a54c908e7dc341e9bbd0c), implementations: [0x53c165169401764778F780a69701385eb0FF19B7](https://etherscan.io/address/0x53c165169401764778F780a69701385eb0FF19B7#code) - 2023-07-27 22:05 UTC, deployment of [SchemaRegistry](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000020#code): transaction [0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb](https://optimistic.etherscan.io/tx/0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb), implementations: [0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13](https://optimistic.etherscan.io/address/0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13#code) - 2023-07-27 22:05 UTC, deployment of [EAS](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000021#code): transaction [0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb](https://optimistic.etherscan.io/tx/0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb), implementations: [0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088](https://optimistic.etherscan.io/address/0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088#code) - 2023-06-06 18:24 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x28a55488fef40005309e2DA0040DbE9D300a64AB](https://etherscan.io/address/0x28a55488fef40005309e2DA0040DbE9D300a64AB#code) - 2023-06-06 18:24 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43](https://etherscan.io/address/0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43#code) ([diff](https://disco.l2beat.com/diff/eth:0x0000000000000000000000000000000000000000/eth:0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43)) - 2023-06-06 18:24 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2](https://etherscan.io/address/0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2)) - 2023-06-06 18:24 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0xaE849EFA4BcFc419593420e14707996936E365E2](https://etherscan.io/address/0xaE849EFA4BcFc419593420e14707996936E365E2#code) - 2023-06-06 15:58 UTC, deployment of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537](https://etherscan.io/tx/0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537), implementations: [0x5efa852e92800D1C982711761e45c3FE39a2b6D8](https://etherscan.io/address/0x5efa852e92800D1C982711761e45c3FE39a2b6D8#code) - 2023-06-06 15:58 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537](https://etherscan.io/tx/0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537), implementations: [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code) ([diff](https://disco.l2beat.com/diff/eth:0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5/eth:0x0000000000000000000000000000000000000000)) - 2022-10-04 22:08 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xe8f632050cdf538eebcc5ab4a0ecb426966acfd14118e4fb8b181948449ae70d](https://etherscan.io/tx/0xe8f632050cdf538eebcc5ab4a0ecb426966acfd14118e4fb8b181948449ae70d), implementations: [0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2](https://etherscan.io/address/0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2#code) - 2022-10-04 21:36 UTC, deployment of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0x02985bade8b066202067f455d11aa0996a23c022fcd923e113af5d9997ddb5ce](https://optimistic.etherscan.io/tx/0x02985bade8b066202067f455d11aa0996a23c022fcd923e113af5d9997ddb5ce), implementations: [0x5a7749f83b81B301cAb5f48EB8516B986DAef23D](https://optimistic.etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code) - 2022-08-05 08:23 UTC, deployment of [wstETHEscrow](https://etherscan.io/address/0x76943C0D61395d8F2edF9060e1533529cAe05dE6#code): transaction [0x1bc90e7c6fe12e03691f7eccf025f3a244ea5a4888c7fb274f45f5e1004110ca](https://etherscan.io/tx/0x1bc90e7c6fe12e03691f7eccf025f3a244ea5a4888c7fb274f45f5e1004110ca), implementations: [0x29C5c51A031165CE62F964966A6399b81165EFA4](https://etherscan.io/address/0x29C5c51A031165CE62F964966A6399b81165EFA4#code) - 2021-11-11 19:29 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbabb37235bd38ae5a29717590eedfd9b02f84a12b890b2126feac68f223d7448](https://etherscan.io/tx/0xbabb37235bd38ae5a29717590eedfd9b02f84a12b890b2126feac68f223d7448), implementations: [0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5](https://etherscan.io/address/0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5#code) ([diff](https://disco.l2beat.com/diff/eth:0x0000000000000000000000000000000000000000/eth:0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5)) - 2021-11-11 17:37 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x2625aa2013fd1a650fb0264d2746be597e12f846baa48a68fe14539c200ed6dc](https://etherscan.io/tx/0x2625aa2013fd1a650fb0264d2746be597e12f846baa48a68fe14539c200ed6dc), implementations: [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code) ([diff](https://disco.l2beat.com/diff/eth:0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0/eth:0x0000000000000000000000000000000000000000)) - 2021-06-26 00:52 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x98a05fb521b3349dd92cff2e104d78c6c318add003bb501c0d416b2b4d75df8a](https://etherscan.io/tx/0x98a05fb521b3349dd92cff2e104d78c6c318add003bb501c0d416b2b4d75df8a), implementations: [0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0](https://etherscan.io/address/0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0#code) ([diff](https://disco.l2beat.com/diff/eth:0x16393737D09d2722AD13DcA3cA8C3DB957699F1D/eth:0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0)) - 2021-06-22 22:29 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xd19d40f11c375feeea5fe47576ce98a3a08caac68b2a8a52fb95dd1a76dd205a](https://etherscan.io/tx/0xd19d40f11c375feeea5fe47576ce98a3a08caac68b2a8a52fb95dd1a76dd205a), implementations: [0x16393737D09d2722AD13DcA3cA8C3DB957699F1D](https://etherscan.io/address/0x16393737D09d2722AD13DcA3cA8C3DB957699F1D#code) ## Ossification & Updates Each date links the update on the HTML page, which also shows its contract diffs. ### [2026-10-21 13:06 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=cc5a025f) (1 change) OpFoundationUpgradeSafe: Member rotated. ### [2026-10-01 13:45 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=637b2364) (high severity, 114 changes) OP Contracts Upgrade 20 (op-contracts/v8.0.0-rc.3), executed 2026-09-24. State roots are now proposed as super roots, which are addressed by an L2 timestamp rather than by a block number on this chain. The starting anchor sequence number is therefore a timestamp, changing from 138585637 to 1788842855. The format carries per-chain roots for a future interop set; today each game commits only to this chain. Proving a withdrawal now requires a game whose sequence number is at or after the timestamp of the initiating block rather than its block number; `proveWithdrawalTransaction` is unchanged, as the portal reads this chain's output root out of the super root. The respected game type changed 8 → 9, CANNON_KONA to SUPER_CANNON_KONA. Proposing and challenging remain permissionless, with a 0.08 ETH bond, a 3.5 day clock, max game depth 73 and split depth 30. The fault proof program is the interop variant of kona v1.7.0-rc.2. Game types 0, 1 and 8 were cleared. The permissioned fallback is now type 5, SUPER_PERMISSIONED, which carries no bond and defines only a proposer. It has no challenger, so the OP Foundation Operations Safe no longer holds a challenger role. SystemConfig v3.14.2 → v4.0.0 removes the `batchInbox()` getter; the batch inbox address now lives only in the rollup config. Version changes and implementation diffs: - FaultDisputeGame -> SuperFaultDisputeGame (type 8 -> 9): https://disco.l2beat.com/diff/eth:0x2DDA3584b51eF5236f7726Dea5A0FB6B3cA94AeC/eth:0x19AF533Cc2A2A55786DCB8672aA5717e64213208 - PermissionedDisputeGame -> SuperPermissionedDisputeGame (type 1 -> 5): https://disco.l2beat.com/diff/eth:0xe1dFFCBE4e22B813F26d2106D943C102e7cAb87e/eth:0x5C3eb47cB0174aea522a2a9Ae79487139A53D691 - SystemConfig 3.14.2 -> 4.0.0: https://disco.l2beat.com/diff/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA - SuperchainConfig 2.4.2 -> 2.4.3: https://disco.l2beat.com/diff/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504 - OptimismPortal2 5.6.1 -> 5.8.0: https://disco.l2beat.com/diff/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2/eth:0x1005217ad392DC64CEf501FA1777A27D42166748 ### [2026-09-10 12:45 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=0b31835c) (1 change) Optimism Security Council: Member rotated. ### [2026-07-17 10:10 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=1e9d6e1a) (4 changes) OpFoundation shared Safes (UpgradeSafe + OperationsSafe): 2 members rotated. ### [2026-07-14 10:10 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=62accfa2) (high severity, 167 changes) Karst hardfork (Upgrade 19b, op-contracts/v7.0.0) L2 activation on 2026-07-08 16:00:01 UTC. The final implementation addresses are deterministic and identical to the other Superchain chains (e.g. Ink). Most predeploys now inherit `ProxyAdminOwnedBase`, which lets a contract read its proxy's ProxyAdmin and ProxyAdmin owner on-chain so privileged functions can be gated to them. On the initializable ones — both bridges, both mintable factories, L2CrossDomainMessenger and every FeeVault — the constructor calls `_disableInitializers()` and `initialize()` is restricted to the ProxyAdmin or its owner (the SuperchainProxyAdminOwner). L1Block is not initializable but inherits the same base and gates its new `setFeature` setter the same way. Custom gas token support was removed from L2StandardBridge and L2CrossDomainMessenger. The `gasPayingToken()` override is gone, and `withdraw()` / `withdrawTo()` no longer revert on custom gas token chains. OP Mainnet pays gas in ETH, so behaviour is unchanged. L2ProxyAdmin (1.0.0) adds `upgradePredeploys(address)`, which delegatecalls the L2ContractsManager. FeeVault configuration (recipient, minimum withdrawal amount, withdrawal network) moved from constructor immutables to storage set by `initialize()`, and is now mutable post-deployment via `setRecipient`, `setMinWithdrawalAmount` and `setWithdrawalNetwork` — each gated to the ProxyAdmin owner. Previously these values were fixed at deployment; the SuperchainProxyAdminOwner can now change them. This also applies to OperatorFeeVault. BaseFeeVault and L1FeeVault are byte-identical and now share implementation `0xf7bed7215EEF1003fac426682Cf2edeb958569f7`. GasPriceOracle stayed at 1.6.0 with unchanged source; only its implementation address moved. Version changes and implementation diffs: - L2CrossDomainMessenger 1.4.0 -> 2.2.1: https://disco.l2beat.com/diff/oeth:0xC0d3c0d3c0D3c0D3C0d3C0D3C0D3c0d3c0d30007/oeth:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96 - L2StandardBridge 1.1.0 -> 1.13.2: https://disco.l2beat.com/diff/oeth:0xC0d3c0d3c0D3c0d3C0D3c0D3C0d3C0D3C0D30010/oeth:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1 - SequencerFeeVault 1.1.0 -> 1.6.1: https://disco.l2beat.com/diff/oeth:0xC0D3C0d3c0d3c0d3C0D3c0d3C0D3c0d3c0D30011/oeth:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA - OptimismMintableERC20Factory 1.1.0 -> 1.11.0: https://disco.l2beat.com/diff/oeth:0xc0D3c0d3C0d3c0d3c0D3c0d3c0D3c0D3c0D30012/oeth:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9 - L2ERC721Bridge 1.1.0 -> 1.10.1: https://disco.l2beat.com/diff/oeth:0xC0D3c0d3c0d3c0d3c0D3C0d3C0D3C0D3c0d30014/oeth:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833 - L1Block 1.7.0 -> 1.9.0: https://disco.l2beat.com/diff/oeth:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/oeth:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56 - L2ToL1MessagePasser 1.0.0 -> 1.2.0: https://disco.l2beat.com/diff/oeth:0xC0D3C0d3C0d3c0d3C0d3C0D3c0D3c0d3c0D30016/oeth:0x27E51B2254433A3284D9ba73Ea551C397DB2a124 - OptimismMintableERC721Factory 1.2.0 -> 1.5.1: https://disco.l2beat.com/diff/oeth:0xc0d3C0d3C0d3C0d3C0d3c0d3C0D3C0d3C0D30017/oeth:0xf43862B9d814BB4504158CecCB0b74b31265e4eE - L2ProxyAdmin ProxyAdmin -> L2ProxyAdmin 1.0.0: https://disco.l2beat.com/diff/oeth:0xC0d3C0D3c0d3C0d3c0d3c0D3C0D3C0d3C0D30018/oeth:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F - BaseFeeVault 1.1.0 -> 1.6.1: https://disco.l2beat.com/diff/oeth:0xC0d3c0D3c0d3C0D3C0D3C0d3c0D3C0D3c0d30019/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7 - L1FeeVault 1.1.0 -> 1.6.1: https://disco.l2beat.com/diff/oeth:0xc0D3c0D3C0d3c0d3c0d3C0d3c0d3C0d3C0D3001A/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7 - OperatorFeeVault 1.0.0 -> 1.1.1: https://disco.l2beat.com/diff/oeth:0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537/oeth:0xEddf416c7159387cc6DF3015700F79Cfb8911373 - SchemaRegistry 1.0.1 -> 1.3.1-beta.2: https://disco.l2beat.com/diff/oeth:0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13/oeth:0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34 - EAS 1.0.1 -> 1.4.1-beta.3: https://disco.l2beat.com/diff/oeth:0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088/oeth:0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6 - GasPriceOracle 1.6.0 (source unchanged): https://disco.l2beat.com/diff/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/oeth:0x547d0fba434877D7237d511cF87FABe2ee26b152 Unrelated to Karst: a member of the SafeL2 at `0x3F3Cd78Ef9Bd85961C0729E6BbB11E94Ca6f61D2` was rotated. ### [2026-06-30 20:16 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=60c3fc67) (high severity, 139 changes) Upgrade 19b "Karst" (op-contracts/v7.0.0), executed 2026-06-25 via the new OPContractsManagerV2 (`0x9Ce712Ff84E02659846dc6450BB9b7642fE8bE5D`, v7.1.17). Respected game type changed 0 → 8 (CANNON → CANNON_KONA): the permissionless fault proof now runs the Rust kona-client on the Cannon VM instead of op-program. Trust model is unchanged (still permissionless fault proofs). Implementation upgrades: - OptimismPortal2 v5.2.0 → v5.6.1: https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2 - SystemConfig v3.13.1 → v3.14.2 (adds lastUsedOPCM / OPCM_SLOT): https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9 - DisputeGameFactory → v1.6.1 Creator Pattern (per-type gameImpls, gameArgs): https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b - AnchorStateRegistry → v3.9.0, now post-U16 (holds respectedGameType + blacklistDisputeGame): https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281 - L1CrossDomainMessenger: https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0 - L1StandardBridge: https://disco.l2beat.com/diff/eth:0x61525EaaCDdB97D9184aFc205827E6A4fd0Bf62A/eth:0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891 - L1ERC721Bridge: https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e - ETHLockbox: https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad - OptimismMintableERC20Factory: https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12 - SuperchainConfig (shared): https://disco.l2beat.com/diff/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550 A new OPContractsManager (`0x9Ce712Ff84E02659846dc6450BB9b7642fE8bE5D`) is the upgrade mechanism used for this release; upgrade authority remains with the SuperchainProxyAdminOwner. The active proof program is the kona-client prestate `0x0337ecb3604c0b40c352e0c7711beb17a212d583f4fe956fd8d66e29ad5f9025`. ### [2026-05-15 13:30 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=44c712d2) (4 changes) Scheduled signer-key rotation on shared OP Stack governance contracts (no threshold or permission changes): - DeputyPauseModule (`0x76fC2F971FB355D0453cF9F64d3F9E4f640E1754`): `deputy` rotated from `0x352f1defB49718e7Ea411687E850aA8d6299F7aC` to `0x2fA150379bF32b6d79Eeb4ff9bD280E76049a87c`. Executed via [superchain-ops eth/052](https://github.com/ethereum-optimism/superchain-ops/pull/1399); the [DeputyPauseModule spec](https://specs.optimism.io/protocol/deputy-pause-module.html) specifies that this is a regular rotation. - OpFoundationUpgradeSafe and OpFoundationOperationsSafe: Member rotated. ### [2026-05-05 15:17 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=3e5d5e59) (1 change) Optimism Security Council (`eth:0xc2819DC7...`) — member 12 swap: `0x92827223` → `0xcbC7dCeb`. Shared multisig (referenced by multiple Superchain projects). ### [2026-04-16 09:31 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=49ad3a10) (1 change) One signer rotation on the 6-of-9 SafeL2 (0x3F3Cd7) that controls MintManagerOwner: member 0xc222ab replaced with 0x2eFd8F. Threshold unchanged. ### [2026-04-09 08:04 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=4bd2123b) (11 changes) MintManagerOwner on OP Mainnet (L2) restructured: the previous 3-of-5 multisig was replaced by a 1-of-1 Safe whose sole owner is a 6-of-9 SafeL2 multisig (0x3F3Cd7...). All 5 original EOA members were removed. The 6-of-9 Safe also has a SaferSafes module (0xA8447329...) that can act on its behalf, providing an additional execution path. Net effect: OP token inflation policy now requires 6-of-9 signatures (or the SaferSafes module) through the 1-of-1 delegate, instead of 3-of-5 directly. ### [2026-03-25 10:06 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=6c176b5c) (7 changes) Three signers of the shared OpFoundation multisigs (OpFoundationUpgradeSafe and OpFoundationOperationsSafe) were rotated. The old signer at position 0 was a GnosisSafe (0x42d27eEA1AD6e22Af6284F609847CB3Cd56B9c64) which was replaced by a new EOA. ### [2026-02-27 13:19 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=7f88298c) (2 changes) Optimism Security Council: 2 members replaced. ### [2026-02-12 16:01 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=3de2546f) (high severity, 48 changes) OP Contracts Upgrade 18 (op-contracts/v6.0.0). OptimismPortal2 v5.1.1→v5.2.0: adds Custom Gas Token safety guards preventing ETH value operations in CGT mode. ([diff](https://disco.l2beat.com/diff/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B)) AnchorStateRegistry v3.5.0→v3.7.0: adds safe re-initialization guard for retirementTimestamp and a new getStartingAnchorRoot() getter. ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5)) SystemConfig v3.11.0→v3.13.1: adds DelayedWETH storage slot, setBatcherHash(address) convenience setter, and isCustomGasToken() legacy getter. ([diff](https://disco.l2beat.com/diff/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2)) DisputeGameFactory v1.3.0→v1.4.0: cloning logic now embeds gameType in clone bytecode when gameArgs are present. ([diff](https://disco.l2beat.com/diff/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c)) New PermissionedDisputeGameV2 and FaultDisputeGameV2 move game parameters (VM, WETH, anchor registry, etc.) from constructor immutables into clone bytecode, allowing the factory to configure per-clone without separate implementations. ### [2026-01-24 16:29 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=5871bec8) (3 changes) SaferSafes module (LivenessModule + TimelockGuard) added to OpFoundationUpgradeSafe and OpFoundationOperationsSafe. Timelock delays currently 0. ### [2025-12-18 08:57 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=e7f01124) (high severity, 14 changes) upgrade to safe 1.4.1 ### [2025-12-10 10:25 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=d4970e41) (high severity, 16 changes) L1Block contract from Jovian. Starting in Jovian, every non-deposit L2 tx gets a DA usage estimate and the block sums those up into a new resource called DA footprint. Each non-deposit tx compute daUsageEstimate using the Fjord linear model using the tx fastlzSize, and then multiply by the scalar (daFootprintGasScalar). The scalar essentially is a bytes-to-gas conversion factor, e.g. higher daFootprintGasScalar -> each estimated DA byte costs more footprint-gas -> stricter DA-per-block cap. In practice: - blocks can become “DA-full” before they are “gas-full” (daFootprint(block) <= gasLimit) - base fee now responds to DA-heavy blocks - base fee update uses gasMetered := max(gasUsed, blobGasUsed) and Jovian repurposes blobGasUsed to store daFootprint - DA-heavy transactions become pricier to include (DA-heavy blocks push gasMetered up, which pushes EIP-1559 base fee up, which feeds back into tx pricing) Gas price oracle - isJovian fork for new gas calculation (getOperatorFee()) https://disco.l2beat.com/diff/oeth:0x93e57A196454CB919193fa9946f14943cf733845/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1 ### [2025-11-28 09:38 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=5a491673) (high severity, 66 changes) 'Jovian' Upgrade + Fusaka Readiness: https://gov.optimism.io/t/upgrade-17-jovian-hardfork-and-fusaka-readiness/10400 [OptimismPortal2](https://disco.l2beat.com/diff/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202), [System Config](https://disco.l2beat.com/diff/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED) - Jovian block values - fee updates `MIN_BASE_FEE`, `DA_FOOTPRINT_GAS_SCALAR` and operator fee [L1StandardBridge](https://disco.l2beat.com/diff/eth:0xe32B192fb1DcA88fCB1C56B3ACb429e32238aDCb/eth:0x61525EaaCDdB97D9184aFc205827E6A4fd0Bf62A), [SuperchainConfig](https://disco.l2beat.com/diff/eth:0xCe28685EB204186b557133766eCA00334EB441E4/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957), [OptimismMintableERC20Factory](https://disco.l2beat.com/diff/eth:0x5493f4677A186f64805fe7317D6993ba4863988F/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB), [DisputeGameFactory](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50), [L1ERC721Bridge](https://disco.l2beat.com/diff/eth:0x7f1d12fB2911EB095278085f721e644C1f675696/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9),[L1CrossDomainMessenger](https://disco.l2beat.com/diff/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0), [MIPS](https://disco.l2beat.com/diff/eth:0x07BABE08EE4D07dBA236530183B24055535A7011/eth:0x6463dEE3828677F6270d83d45408044fc5eDB908), [PermissionedDisputeGame](https://disco.l2beat.com/diff/eth:0x5562D33B68fa20572FC58fA36aB19CCFeDD6eE8f/eth:0x467E6a8D6916E7394F9715b4DE9339ee36887382) - minimal diff [FaultDisputeGame] (https://disco.l2beat.com/diff/eth:0x22F2AfB837156246187Cd2652ad281eE08EBBB9d/eth:0x478c26109b169a840D61E95B19512FF0b5F19c87) : added MIN_BASE_FEE, DA_FOOTPRINT_GAS_SCALAR to update type, small diffs. ### [2025-10-29 18:19 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=eb13fe49) (1 change) performed an empty mint to disallow inflating the supply for one year. the inflation rate is 2% per year but it was never used, and it is the first time they explicitly skip a year. the value here shows the timestamp of last mint. ### [2025-10-20 15:26 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=b2e0ba31) (2 changes) OpFoundation multisigs member rotation. ### [2025-10-03 14:31 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=9ecac755) (high severity, 63 changes) This is upgrade 16a (https://gov.optimism.io/t/maintenance-upgrade-proposal-u16a/10288) OptimismPortal2 - removed unused superchain withdrawal code, ETH lockbox feature moved out to its own contract. https://disco.l2beat.com/diff/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999 SystemConfig - setFeature function to activate/deactivate features (currently used for the ETHLockbox feature). https://disco.l2beat.com/diff/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557 L1ERC721Bridge - minor changes. https://disco.l2beat.com/diff/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F/eth:0x7f1d12fB2911EB095278085f721e644C1f675696 L1CrossDomainMessenger - minor changes. https://disco.l2beat.com/diff/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6 L1StandardBridge - minor changes. https://disco.l2beat.com/diff/eth:0x44AfB7722AF276A601D524F429016A18B6923df0/eth:0xe32B192fb1DcA88fCB1C56B3ACb429e32238aDCb FaultDisputeGame (via DisputeGameFactory gameImpls[0]) - no code changes; constructor variables updated (e.g., DelayedWETH, VM). https://disco.l2beat.com/diff/eth:0xd73Dd0F5665055B03eA0bFcac49bd4d26F1FFA4F/eth:0x22F2AfB837156246187Cd2652ad281eE08EBBB9d PermissionedDisputeGame (via DisputeGameFactory gameImpls[1]) - no code changes; constructor variables updated (e.g., DelayedWETH, VM). https://disco.l2beat.com/diff/eth:0xEcca4BFbD017002abf25Aeebf2B21b903A5fC124/eth:0xbF2027A15e1a6ceE76257ED9bB623C8dC08D4EF7 MIPS → MIPS64 - added function for pseudorandomness generation. https://disco.l2beat.com/diff/eth:0xA1B54D89e305bcd322Ba0C9C094093173C0d6b3a/eth:0x07BABE08EE4D07dBA236530183B24055535A7011 DelayedWETH (replacement 1) - same code, same admin; only diff is totalSupply. https://disco.l2beat.com/diff/eth:0xc5f54F934075677FBA99b5E43468439cbdE88ca7/eth:0xD061AB95069987868768818cc1248705351e2D0e DelayedWETH (replacement 2) - same code, same admin; only diff is totalSupply. https://disco.l2beat.com/diff/eth:0xe214879aD573693A4C49f7654449Caa455cdE34f/eth:0xe03F4d1D0E6B8b18b97198598b3f792E57BA17d4 ### [2025-08-18 14:04 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=43cfdc57) (2 changes) Security council members rotation. ### [2025-07-25 17:48 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=793e7ea6) (high severity, 134 changes) [Optimism upgrade 16](https://gov.optimism.io/t/upgrade-16-proposal-interop-contracts-stage-1-and-go-1-23-support-in-cannon/10037): Interop Contracts, Stage 1, and Go 1.23 Support in Cannon gov changes: - DeputyGuardianModule removed: only the SC can e.g. blacklistDisputeGame or change respectedGameType - DeputyPauseModule is now a module of the Optimism Guardian Multisig, meaning the Optimism EOA can pause through it - Pause expires after 3 months (local + superchain pause = 6 months max pause) - identifier = local eth lockbox for local pause or 0x0 for global pause almost all contracts have: - paused() and guardian() now exposed - additional initializer/upgrade check - lots of interfaces added in the flat files [OptimismPortal2](https://disco.l2beat.com/diff/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a) - add `migrateLiquidity()` and `migrateToSuperRoots()`, callable by proxyAdminOwner - `setRespectedGameType()` and `blacklistDisputeGame()` removed (moved to AnchorStateRegistry) - ETH moved to the ETHLockbox - superRoots (interop) support (e.g. for proving withdrawals) ETHLockbox - new contract - holds ETH - ETH can be unlocked by the optiportal, or withdrawn/migrated by the ProxyAdminOwner [SystemConfig](https://disco.l2beat.com/diff/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa) - max gas limit 200M -> 500M [L1Standardbridge](https://disco.l2beat.com/diff/eth:0x0b09ba359A106C9ea3b181CBc5F394570c7d2a7A/eth:0x44AfB7722AF276A601D524F429016A18B6923df0) - no significant changes (still holds the ERC-20 tokens) [L1CDM](https://disco.l2beat.com/diff/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54) - `hashSuperRootProof()`, `encodeSuperRootProof()` added, related to the future SuperFaultDisputeGame and interop [DisputeGameFactory](https://disco.l2beat.com/diff/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D) - minimal changes [AnchorStateRegistry](https://disco.l2beat.com/diff/eth:0x7b465370BB7A333f99edd19599EB7Fb1c2D3F8D2/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E) - `setRespectedGameType()` and `blacklistDisputeGame()` added, can be called by guardian (not DeputyPauser) [FaultDisputeGame](https://disco.l2beat.com/diff/eth:0x89D68b1D63AAA0db4af1163e81f56B76934292F8/eth:0xd73Dd0F5665055B03eA0bFcac49bd4d26F1FFA4F) - minimal changes [PermissionedDisputegame](https://disco.l2beat.com/diff/eth:0xa1E0baCde89d899B3f24eEF3D179cC335A24E777/eth:0xEcca4BFbD017002abf25Aeebf2B21b903A5fC124) - minimal changes [DelayedWETH](https://disco.l2beat.com/diff/eth:0x5e40B9231B86984b5150507046e354dbFbeD3d9e/eth:0x33Dadc2d1aA9BB613A7AE6B28425eA00D44c6998) - ownable removed - `hold()` (recover) now requires msg.sender == proxyadminowner [MIPS64](https://disco.l2beat.com/diff/eth:0xF027F4A985560fb13324e943edf55ad6F1d15Dc1/eth:0xA1B54D89e305bcd322Ba0C9C094093173C0d6b3a) - explanations about the diff are in the forum post [L1ERC721Bridge](https://disco.l2beat.com/diff/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F) - minimal changes ### [2025-07-14 12:47 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=07eacb49) (20 changes) Discovery rerun on the same block number with only config-related changes. ### [2025-07-14 12:47 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=0765693b) (32 changes) Discovery rerun on the same block number with only config-related changes. ### [2025-05-26 15:08 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=7d3a108c) (2 changes) gaslimit adjustments (net increase while decreasing elasticity). ### [2025-05-12 08:10 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=16fb095c) (high severity, 82 changes) Isthmus L2 contract upgrades, mainly focusing on support for the new operator fee. ### [2025-05-08 10:05 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=fee2cf7f) (11 changes) Introduction of the DeputyPause Module and the EOA superchain pauser. New dispute games deployed with identical code but 1.6.0 cannon64 prestates. ### [2025-04-28 07:26 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=b4d134f4) (25 changes) DelayedWETH owners upgraded to the SuperchainProxyAdminOwner. Under review removed. ### [2025-04-25 13:14 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=24b38107) (high severity, 104 changes) [Isthmus upgrade](https://vote.optimism.io/proposals/8705916809146420472067303211131851783087744913535435360574720946039078686841): - upgraded proof system VM: MIPS (MT-Cannon MIPS64) - operator fee (fee mechanism to improve fee config for zk proven and alt-DA systems) - pectra readiness ### [2025-04-04 09:17 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=62284543) (high severity, 130 changes) Upgrade 13: https://gov.optimism.io/t/upgrade-proposal-13-opcm-and-incident-response-improvements/9739 ### [2025-02-12 10:00 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=8cc327b1) (2 changes) Optimism SecurityCouncil rotates signers. ### [2025-02-08 15:57 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=f0fea75b) (2 changes) Single SC member rotated. ### [2025-02-06 09:16 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=3848318b) (1 change) OP Stack SC signer rotation. ### [2025-01-27 11:40 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=2f31d636) (high severity, 14 changes) This is a SystemConfig upgrade (v2.3.0, adding gasToken support) for five Superchain eco chains that use superchain governance. - op mainnet - metal - zora - arena-z - mode Due to temporary storage setter implementations, multiple upgrades are counted within a single tx. ### [2025-01-09 06:23 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=98eb7db6) (30 changes) New MIPS, PermissionedDisputeGame, FaultDisputeGame and DelayedWETH contracts. - interop: add `hashL2toL2CrossDomainMessage()` and `_dependencySet` (in 'encoding' and 'hashing' libraries) - formatting and doc changes - removal of interfaces (IDisputeGame, IFaultDisputeGame) - no changes in DelayedWETH #### MIPS Refactor: [64bit architecture and multithreading support](https://github.com/ethereum-optimism/docs/issues/1066). ### [2024-10-23 09:21 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=0b6a847f) (1 change) Gas limit doubled to 60M. ### [2024-10-12 07:40 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=f7c1dc3f) (high severity, 23 changes) New custom escrow for wstETH, supports rebasable wstETH on L2. Escrowed token is still wstETH. ### [2024-10-08 17:23 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=79c5d08b) (1 change) The deposits on the main Lido escrow for Optimism are paused by the Lido EmergencyBrake Multisig following [an upgrade proposal](https://research.lido.fi/t/steth-on-optimism-upgrade-announcement-and-action-plan/8474) for rebasing L2 stETH. This is a scheduled action and deposits should be reenabled im 2024/10/10. Config related: Move to discovery driven data. ### [2024-09-25 09:34 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=f5eebd45) (1 change) Single signer change in SNX MS (SNX escrow owner). ### [2024-09-16 14:09 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=a9c6509d) (9 changes) Synthetix MS signer changes. ### [2024-09-12 07:25 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=fd9b3eaa) (6 changes) Upgrade 10 part 2. Reactivates proof system and adds ability for guardian module to set anchor state. ### [2024-09-11 09:31 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=41492ef8) (high severity, 34 changes) Upgrade #10: https://gov.optimism.io/t/upgrade-proposal-10-granite-network-upgrade/8733 It fixes some bugs and adds the ability to the anchor state registry to be set by the guardian. ### [2024-09-06 11:28 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=958f54b1) (2 changes) One signer of SynthetixMultisig is replaced. ### [2024-08-30 10:28 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=c0e3f371) (11 changes) Synthetix MS changes (owns the SNX escrow). Optimism is meanwhile still using the fallback centralized FPs. ### [2024-08-17 12:04 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=a259c851) (3 changes) OP Mainnet has used the fall back to activate permissioned games. ### [2024-07-12 12:08 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=c1cc2483) (6 changes) These changes are due to the [OP Mainnet 'Fjord' upgrade](https://gov.optimism.io/t/upgrade-proposal-9-fjord-network-upgrade/8236) which, on the L1, affects the fault proof related contracts in order to introduce the new op-program pre-state hash (otherwise code-identical). #### Fjord upgrade TLDR - secp256r1 precompile - brotli channel compression - FastLZ based DA fee calculation - max sequencer drift (time delta between L2 block ts and according epoch ts derived from L1) raised from 10 to 30 minutes ### [2024-07-12 11:52 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=24594bfa) (high severity, 5 changes) The changes are due to the [OP Mainnet 'Fjord' upgrade](https://gov.optimism.io/t/upgrade-proposal-9-fjord-network-upgrade/8236). The GasPriceOracle predeploy is changed to use a FastLZ-based compression estimator for gas price estimation. (compare [the spec](https://github.com/ethereum-optimism/specs/blob/main/specs/protocol/fjord/exec-engine.md#fees)) ### [2024-06-28 07:31 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=50024322) (1 change) Changed SystemConfig owner from FoundationMultisig_2 (5/7) to FoundationMultisig_1 (5/7). ### [2024-06-11 10:11 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=aeff10bd) (3 changes) The ProxyAdmin owner is now the same as L1 (but aliased). ### [2024-06-11 08:53 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=d86b3fe1) (high severity, 38 changes) Introduction of permissionless fraud proofs and permissions update to be Stage 1. ### [2024-06-05 10:52 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=d08e5860) (22 changes) Optimism Security Council: 2 members replaced. ### [2024-06-05 10:52 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=1a8c413b) (1 change) Optimism Security Council: 2 members replaced. ### [2024-05-15 13:52 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=f0162ec3) (11 changes) One signer of the SynthetixMultisig (governing the SNX escrow) has been replaced: `0xEde8a407913A874Dd7e3d5B731AFcA135D30375E` replaced by `0xe2163dd599067919d1e9108929b568Bf41D3A420`. ### [2024-04-12 12:08 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=234c8021) (high severity, 37 changes) Summary and rationale of the changes: #### SystemConfig The SystemConfig now contains the addresses of all the contracts. #### OptimismPortal The L2OutputOracle and the SystemConfig variables are no longer immutable. They're only modifiable via an upgrade, but now there is the advantage that different chains can share the same implementation: if they are immutable, the address is hardcoded into the bytecode instead, but now the only things that changes is the state of the proxy. #### L2OutputOracle Immutable variables, including the challenger and the proposer are no longer immutable. #### L1StandardBridge The messenger and other bridge on L2 are no longer immutable. #### L1CrossDomainMessenger The OptimismPortal variable is no longer immutable. ### [2024-03-14 00:15 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=c1fdae5b) (3 changes) Optimism uses blobs ### [2024-03-06 22:46 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=34096a96) (high severity, 34 changes) Introduced SuperchainConfig contract, able to pause the following functions: OptimismPortal.proveWithdrawalTransaction() OptimismPortal.finalizeWithdrawalTransaction() L1CrossDomainMessenger.relayMessage() StandardBridge.finalizeBridgeERC20() StandardBridge.finalizeBridgeETH() L1ERC721Bridge.finalizeBridgeERC721(). ### [2024-02-12 08:28 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=db0d2b31) (4 changes) The Security Council is introduced, but with a 4/13 threshold. Now the multisig owning the ProxyAdmin is a 2/2 with the Foundation multisig and the Security Council multisig. ### [2024-01-08 11:19 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=926d8522) (9 changes) One owner is removed from SynthetixMultisig (now 5/11). ### [2024-01-03 13:33 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=ca61cf40) (13 changes) SynthetixMultisig has removed one owner. We are not showing it on the frontend. If it changes often, we can ignore it but for now I'll leave it as it is. ### [2023-09-26 08:05 UTC](https://ethbeat.org/layer2s/projects/op-mainnet?update=2c04a739) (1 change) ## Operator ### The system has a centralized operator The operator is the only entity that can propose blocks. A live and trustworthy operator is vital to the health of the system. **Risks** - MEV can be extracted if the operator exploits their centralized position and frontruns user transactions. ### Users can force any transaction Because the state of the system is based on transactions submitted on the underlying host chain and anyone can submit their transactions there it allows the users to circumvent censorship by interacting with the smart contract on the host chain directly. **References** - [Sequencing Window - OP Mainnet Specs](https://github.com/ethereum-optimism/optimism/blob/51eeb76efeb32b3df3e978f311188aa29f5e3e94/specs/glossary.md#sequencing-window) - [OptimismPortal2.sol - source code, depositTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ## Sequencing ### Transactions are ordered by a centralized sequencer OP Mainnet uses a single centralized sequencer for fast confirmations. Users can bypass it with one Ethereum transaction to the OptimismPortal. Rollup nodes derive the deposited transaction from Ethereum, including it after at most one sequencing window. **Centralized sequencing spec sheet** | Property | Value | Description | | --- | --- | --- | | Trusted preconfirmation | 250 ms, 2 s L2 block time | The centralized sequencer streams cumulative Flashblock preconfirmations every 250 ms while sealing regular L2 blocks every 2 seconds. Flashblocks are out of protocol: the promise has no protocol enforcement or slashing, and 250 ms is a target that can vary with execution load. | | Trusted ordering | Dynamic priority auction, Fee order per Flashblock | For each 250 ms build loop, the centralized builder selects available transactions by priority fee. Transactions committed to an earlier Flashblock are not reordered when a higher-fee transaction arrives later, so arrival time also affects ordering. This policy is not enforced by the derivation rules. | | Sequencer | Centralized, Raft HA (sentiment: bad) | The OP Mainnet operator controls real-time ordering. They run redundant sequencer instances coordinated by op-conductor using Raft leader election, with only the leader producing blocks. op-conductor explicitly assumes all nodes are honest and is not Byzantine fault tolerant, so the replicas do not create independent operators or censorship resistance. | | Real-time censorship resistance | No (sentiment: bad) | The centralized sequencer can censor transactions submitted through the normal L2 path. | | Forced inclusion | Automatic derivation, 1 L1 tx: portal deposit (sentiment: good) | The user submits one Ethereum transaction to the OptimismPortal which is automatically derived by conforming nodes. | | Inclusion delay | 12 hours, 3,600 L1 blocks (sentiment: good) | The static sequencing window is measured in Ethereum blocks. | | Inclusion mechanics | 1 L1 Tx, Address alias | Forced inclusion creates an L1-originated deposit transaction rather than submitting the original signed L2 transaction. Its calldata is capped at 120,000 bytes, its minimum L2 gas limit is 21,000 plus 40 gas per calldata byte, and deposits share a metered 20,000,000 gas resource limit per Ethereum block. L1 contract callers use an aliased address on L2. | | Exit delay | 21 days 3 hours, 12h inclusion + 20d 15h state | After successful L2 inclusion (forced or sequencer), the user can propose the state needed to exit by creating a permissionless fault dispute game. A maximally delayed challenge path can take up to 17 days 3 hours: both teams' 3 days 12 hours chess clocks plus up to 10 days 3 hours of cumulative clock extensions. This is followed by the 3 days 12 hours finality air gap. Parallel branches increase the transactions and gas needed to defend and resolve the game. The 7 days withdrawal-proof maturity period runs concurrently. | | Exit economics | 0.08 ETH, Favors attacker 1.09× | Self-proposing the state needed for an exit starts with a 0.08 ETH bond. If challenged, the user must defend it with progressively larger bonds: each counterclaim costs 1.09 times the claim it counters, favoring the attacker in a capital-exhaustion attack. | #### Censorship resistance The centralized sequencer provides no real-time censorship resistance. The Ethereum deposit path provides eventual censorship resistance, assuming the deposit is included on Ethereum. **References** - [OP Stack specification - sequencing window](https://specs.optimism.io/protocol/overview.html#epochs-and-the-sequencing-window) - [OP Mainnet documentation - Flashblocks](https://docs.optimism.io/op-stack/features/flashblocks) - [OP Stack documentation - Conductor](https://docs.optimism.io/chain-operators/tools/op-conductor) - [OP Mainnet documentation - transaction fees](https://docs.optimism.io/op-stack/transactions/fees) - [OptimismPortal2 - source code](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) - [OP Stack specification - fault dispute game resolution](https://specs.optimism.io/fault-proof/stage-one/honest-challenger-fdg.html#resolution) ## Withdrawals ### Regular exits The user initiates the withdrawal by submitting a regular transaction on this chain. When a state root containing such transaction is settled, the funds become available for withdrawal on L1 after 3d 12h. Withdrawal inclusion can be proven before state root settlement, but a 7d period has to pass before it becomes actionable. The process of state root settlement takes a challenge period of at least 3d 12h to complete. Finally the user submits an L1 transaction to claim the funds. This transaction requires a merkle proof. **References** - [OptimismPortal2.sol - Etherscan source code, proveWithdrawalTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) - [OptimismPortal2.sol - Etherscan source code, finalizeWithdrawalTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ### Forced messaging If the user experiences censorship from the operator with regular L2->L1 messaging they can submit their messages directly on L1. The system is then obliged to service this request or halt all messages, including forced withdrawals from L1 and regular messages initiated on L2. Once the force operation is submitted and if the request is serviced, the operation follows the flow of a regular message. **References** - [Forced withdrawal from an OP Stack blockchain](https://docs.optimism.io/stack/transactions/forced-transaction) ## Other considerations ### EVM compatible smart contracts are supported OP stack chains are pursuing the EVM Equivalence model. No changes to smart contracts are required regardless of the language they are written in, i.e. anything deployed on L1 can be deployed on L2. **References** - [Introducing EVM Equivalence](https://medium.com/ethereum-optimism/introducing-evm-equivalence-5c2021deb306) ## Permissions Explore these contracts and permissions in Disco, ETHBEAT's contract explorer: https://disco.l2beat.com/ui/p/optimism ### Ethereum #### Actors ##### SuperchainProxyAdminOwner Addresses: [0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A](https://etherscan.io/address/0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A) A Multisig with 2/2 threshold. - Can upgrade **with no delay** - DelayedWETH [via: SuperchainProxyAdmin] - SystemConfig [via: SuperchainProxyAdmin] - AnchorStateRegistry [via: SuperchainProxyAdmin] - L1CrossDomainMessenger [via: SuperchainProxyAdmin] - ETHLockbox [via: SuperchainProxyAdmin] - L1ERC721Bridge [via: SuperchainProxyAdmin] - OptimismMintableERC20Factory [via: SuperchainProxyAdmin] - SuperchainConfig [via: SuperchainProxyAdmin] - L1StandardBridge [via: SuperchainProxyAdmin] - OptimismPortal2 [via: SuperchainProxyAdmin] - DisputeGameFactory [via: SuperchainProxyAdmin] - DeployerWhitelist [via: L2ProxyAdmin] - L2CrossDomainMessenger [via: L2ProxyAdmin] - GasPriceOracle [via: L2ProxyAdmin] - L2StandardBridge [via: L2ProxyAdmin] - SequencerFeeVault [via: L2ProxyAdmin] - OptimismMintableERC20Factory [via: L2ProxyAdmin] - L1BlockNumber [via: L2ProxyAdmin] - L2ERC721Bridge [via: L2ProxyAdmin] - L1Block [via: L2ProxyAdmin] - L2ToL1MessagePasser [via: L2ProxyAdmin] - OptimismMintableERC721Factory [via: L2ProxyAdmin] - L2ProxyAdmin [via: L2ProxyAdmin] - BaseFeeVault [via: L2ProxyAdmin] - L1FeeVault [via: L2ProxyAdmin] - OperatorFeeVault [via: L2ProxyAdmin] - SchemaRegistry [via: L2ProxyAdmin] - EAS [via: L2ProxyAdmin] - Can interact with AddressManager - set and change address mappings [via: SuperchainProxyAdmin] - Can interact with DisputeGameFactory - set the dispute game implementation and initial bond for any game type Participants (2): [0x847B5c174615B1B7fDF770882256e2D3E95b9D92](https://ethbeat.org/layer2s/projects/op-mainnet#OpFoundationUpgradeSafe) (OpFoundationUpgradeSafe), [0xc2819DC788505Aac350142A7A707BF9D03E3Bd03](https://ethbeat.org/layer2s/projects/op-mainnet#Optimism Security Council) (Optimism Security Council) Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#SuperchainProxyAdminOwner), [Cyber](https://ethbeat.org/layer2s/projects/cyber#SuperchainProxyAdminOwner), [Funki](https://ethbeat.org/layer2s/projects/funki#SuperchainProxyAdminOwner), [Ink](https://ethbeat.org/layer2s/projects/ink#SuperchainProxyAdminOwner), [Lisk](https://ethbeat.org/layer2s/projects/lisk#SuperchainProxyAdminOwner), [Settlus](https://ethbeat.org/layer2s/projects/settlus#SuperchainProxyAdminOwner), [Shape](https://ethbeat.org/layer2s/projects/shape#SuperchainProxyAdminOwner), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SuperchainProxyAdminOwner), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SuperchainProxyAdminOwner), [World Chain](https://ethbeat.org/layer2s/projects/world#SuperchainProxyAdminOwner) ##### OpFoundationUpgradeSafe Addresses: [0x847B5c174615B1B7fDF770882256e2D3E95b9D92](https://etherscan.io/address/0x847B5c174615B1B7fDF770882256e2D3E95b9D92) A Multisig with 5/7 threshold. It uses the following modules: SaferSafes (A Gnosis Safe module combining LivenessModule and TimelockGuard. Provides liveness checks where a fallback owner can challenge and take over if Safe owners are unresponsive, plus optional timelock delays for transaction scheduling). Member of SuperchainProxyAdminOwner. - Can interact with SystemConfig - it can update the preconfer address, the batch submitter (Sequencer) address and the gas configuration of the system - Can interact with SuperchainConfig - Allowed to pause withdrawals. In op stack systems with a proof system, the Guardian can also blacklist dispute games and set the respected game type (permissioned / permissionless) [via: LivenessModule if the number of Optimism Security Council members falls below 8 → Optimism Security Council → Optimism Guardian Multisig] Participants (7): [0xf1EfbdC2C0BDC4554E0f1639D7fe88cD870a4639](https://etherscan.io/address/0xf1EfbdC2C0BDC4554E0f1639D7fe88cD870a4639), [0x3041BA32f451F5850c147805F5521AC206421623](https://etherscan.io/address/0x3041BA32f451F5850c147805F5521AC206421623), [0xC2Db495f5a1F91172A361AAFA6FdE47c41de6dF5](https://etherscan.io/address/0xC2Db495f5a1F91172A361AAFA6FdE47c41de6dF5), [0xa564C83958f7F9fA5a255a540EF5e49445873104](https://etherscan.io/address/0xa564C83958f7F9fA5a255a540EF5e49445873104), [0x4D014f3c5F33Aa9Cd1Dc29ce29618d07Ae666d15](https://etherscan.io/address/0x4D014f3c5F33Aa9Cd1Dc29ce29618d07Ae666d15), [0x69acfE2096Dfb8d5A041eF37693553c48d9BFd02](https://etherscan.io/address/0x69acfE2096Dfb8d5A041eF37693553c48d9BFd02), [0xa2A58E31C03C59e34ab4d996d811DA0C035BfDea](https://etherscan.io/address/0xa2A58E31C03C59e34ab4d996d811DA0C035BfDea) Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#OpFoundationUpgradeSafe), [Cyber](https://ethbeat.org/layer2s/projects/cyber#OpFoundationUpgradeSafe), [Funki](https://ethbeat.org/layer2s/projects/funki#OpFoundationUpgradeSafe), [Ink](https://ethbeat.org/layer2s/projects/ink#OpFoundationUpgradeSafe), [Lisk](https://ethbeat.org/layer2s/projects/lisk#OpFoundationUpgradeSafe), [Settlus](https://ethbeat.org/layer2s/projects/settlus#OpFoundationUpgradeSafe), [Shape](https://ethbeat.org/layer2s/projects/shape#OpFoundationUpgradeSafe), [Soneium](https://ethbeat.org/layer2s/projects/soneium#OpFoundationUpgradeSafe), [Unichain](https://ethbeat.org/layer2s/projects/unichain#OpFoundationUpgradeSafe), [World Chain](https://ethbeat.org/layer2s/projects/world#OpFoundationUpgradeSafe) ##### SaferSafes Addresses: [0xA8447329e52F64AED2bFc9E7a2506F7D369f483a](https://etherscan.io/address/0xA8447329e52F64AED2bFc9E7a2506F7D369f483a) A Gnosis Safe module combining LivenessModule and TimelockGuard. Provides liveness checks where a fallback owner can challenge and take over if Safe owners are unresponsive, plus optional timelock delays for transaction scheduling. - Can interact with SystemConfig - it can update the preconfer address, the batch submitter (Sequencer) address and the gas configuration of the system [via: OpFoundationUpgradeSafe] - Can interact with SuperchainConfig - Allowed to pause withdrawals. In op stack systems with a proof system, the Guardian can also blacklist dispute games and set the respected game type (permissioned / permissionless) [via: OpFoundationUpgradeSafe → LivenessModule if the number of Optimism Security Council members falls below 8 → Optimism Security Council → Optimism Guardian Multisig] Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#SaferSafes), [Cyber](https://ethbeat.org/layer2s/projects/cyber#SaferSafes), [Funki](https://ethbeat.org/layer2s/projects/funki#SaferSafes), [Ink](https://ethbeat.org/layer2s/projects/ink#SaferSafes), [Lisk](https://ethbeat.org/layer2s/projects/lisk#SaferSafes), [Settlus](https://ethbeat.org/layer2s/projects/settlus#SaferSafes), [Shape](https://ethbeat.org/layer2s/projects/shape#SaferSafes), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SaferSafes), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SaferSafes), [World Chain](https://ethbeat.org/layer2s/projects/world#SaferSafes) ##### Optimism Security Council Addresses: [0xc2819DC788505Aac350142A7A707BF9D03E3Bd03](https://etherscan.io/address/0xc2819DC788505Aac350142A7A707BF9D03E3Bd03) A Multisig with 10/13 threshold. It uses the following modules: LivenessModule (used to remove members inactive for 3mo 8d while making sure that the threshold remains above 75%. If the number of members falls below 8, the OpFoundationUpgradeSafe takes ownership of the multisig). Member of Optimism Guardian Multisig, SuperchainProxyAdminOwner. - Can interact with SuperchainConfig - Allowed to pause withdrawals. In op stack systems with a proof system, the Guardian can also blacklist dispute games and set the respected game type (permissioned / permissionless) [via: Optimism Guardian Multisig] Participants (13): [0xE61F12136bA47De67D15a1D59fE2f383ec5176aE](https://etherscan.io/address/0xE61F12136bA47De67D15a1D59fE2f383ec5176aE), [0x652BC529E171847E2fFddCeA13567643C84ccB5f](https://etherscan.io/address/0x652BC529E171847E2fFddCeA13567643C84ccB5f), [0x5c1f9E9384Ca9fE0499277F6a015a2ac0A317a81](https://etherscan.io/address/0x5c1f9E9384Ca9fE0499277F6a015a2ac0A317a81), [0x4A7322258c9E690e4CB8Cea6e5251443E956e61E](https://etherscan.io/address/0x4A7322258c9E690e4CB8Cea6e5251443E956e61E), [0x3A53B4B081Eb7Cb00C46497b16Ea22e65E4Faa94](https://etherscan.io/address/0x3A53B4B081Eb7Cb00C46497b16Ea22e65E4Faa94), [0xEF9A98511939eEe6Ec69af62082E3F2ff606877c](https://etherscan.io/address/0xEF9A98511939eEe6Ec69af62082E3F2ff606877c), [0x6323ef2b80030f3fBc508bFc321Fc71fDB95c865](https://etherscan.io/address/0x6323ef2b80030f3fBc508bFc321Fc71fDB95c865), [0xd5b735b676A043a53946C3b6F6BE28c1ECE6aC90](https://etherscan.io/address/0xd5b735b676A043a53946C3b6F6BE28c1ECE6aC90), [0x7ed8d9Af9eaA194D1A75C67c1475579E42289E39](https://etherscan.io/address/0x7ed8d9Af9eaA194D1A75C67c1475579E42289E39), [0xd91530dB01c60C6B3b824707D33fb0771aB85930](https://etherscan.io/address/0xd91530dB01c60C6B3b824707D33fb0771aB85930), [0x0a8742365a7EB0A3698293ac54357B5Ac04cefE6](https://etherscan.io/address/0x0a8742365a7EB0A3698293ac54357B5Ac04cefE6), [0xbfA046B0bc5cEa1596be62B8b3f79f9f41f1E0d9](https://etherscan.io/address/0xbfA046B0bc5cEa1596be62B8b3f79f9f41f1E0d9), [0xcbC7dCeb857F0b25523618cCa0A03c419a6d7eA6](https://etherscan.io/address/0xcbC7dCeb857F0b25523618cCa0A03c419a6d7eA6) Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#Optimism%20Security%20Council), [Cyber](https://ethbeat.org/layer2s/projects/cyber#Optimism%20Security%20Council), [Funki](https://ethbeat.org/layer2s/projects/funki#Optimism%20Security%20Council), [Ink](https://ethbeat.org/layer2s/projects/ink#Optimism%20Security%20Council), [Lisk](https://ethbeat.org/layer2s/projects/lisk#Optimism%20Security%20Council), [Settlus](https://ethbeat.org/layer2s/projects/settlus#Optimism%20Security%20Council), [Shape](https://ethbeat.org/layer2s/projects/shape#Optimism%20Security%20Council), [Soneium](https://ethbeat.org/layer2s/projects/soneium#Optimism%20Security%20Council), [Unichain](https://ethbeat.org/layer2s/projects/unichain#Optimism%20Security%20Council), [World Chain](https://ethbeat.org/layer2s/projects/world#Optimism%20Security%20Council) **References** - [Security Council members - Optimism Collective Governance Forum](https://gov.optimism.io/t/security-council-vote-2-initial-member-ratification/7118) ##### LivenessGuard Addresses: [0x24424336F04440b1c28685a38303aC33C9D14a25](https://etherscan.io/address/0x24424336F04440b1c28685a38303aC33C9D14a25) Modular contract to be used together with the LivenessModule. Tracks liveness / activity of Safe owners. - Can interact with LivenessModule - can remove members of Optimism Security Council inactive for 3mo 8d Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#LivenessGuard), [Cyber](https://ethbeat.org/layer2s/projects/cyber#LivenessGuard), [Funki](https://ethbeat.org/layer2s/projects/funki#LivenessGuard), [Ink](https://ethbeat.org/layer2s/projects/ink#LivenessGuard), [Lisk](https://ethbeat.org/layer2s/projects/lisk#LivenessGuard), [Settlus](https://ethbeat.org/layer2s/projects/settlus#LivenessGuard), [Shape](https://ethbeat.org/layer2s/projects/shape#LivenessGuard), [Soneium](https://ethbeat.org/layer2s/projects/soneium#LivenessGuard), [Unichain](https://ethbeat.org/layer2s/projects/unichain#LivenessGuard), [World Chain](https://ethbeat.org/layer2s/projects/world#LivenessGuard) ##### Optimism Guardian Multisig Addresses: [0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2](https://etherscan.io/address/0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2) A Multisig with 1/1 threshold. It uses the following modules: DeputyPauseModule (Allows 0x2fA150379bF32b6d79Eeb4ff9bD280E76049a87c, called the deputy pauser, to act on behalf of the OpFoundationUpgradeSafe if set as its Safe module). Participants (1): [0xc2819DC788505Aac350142A7A707BF9D03E3Bd03](https://ethbeat.org/layer2s/projects/op-mainnet#Optimism Security Council) (Optimism Security Council) Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#Optimism%20Guardian%20Multisig), [Cyber](https://ethbeat.org/layer2s/projects/cyber#Optimism%20Guardian%20Multisig), [Funki](https://ethbeat.org/layer2s/projects/funki#Optimism%20Guardian%20Multisig), [Ink](https://ethbeat.org/layer2s/projects/ink#Optimism%20Guardian%20Multisig), [Lisk](https://ethbeat.org/layer2s/projects/lisk#Optimism%20Guardian%20Multisig), [Settlus](https://ethbeat.org/layer2s/projects/settlus#Optimism%20Guardian%20Multisig), [Shape](https://ethbeat.org/layer2s/projects/shape#Optimism%20Guardian%20Multisig), [Soneium](https://ethbeat.org/layer2s/projects/soneium#Optimism%20Guardian%20Multisig), [Unichain](https://ethbeat.org/layer2s/projects/unichain#Optimism%20Guardian%20Multisig), [World Chain](https://ethbeat.org/layer2s/projects/world#Optimism%20Guardian%20Multisig) ##### EOA 1 Addresses: [0x6887246668a3b87F54DeB3b94Ba47a6f63F32985](https://etherscan.io/address/0x6887246668a3b87F54DeB3b94Ba47a6f63F32985) - Can interact with SystemConfig - Allowed to commit transactions from the current layer to the host chain ##### Optimism EOA 1 Addresses: [0x2fA150379bF32b6d79Eeb4ff9bD280E76049a87c](https://etherscan.io/address/0x2fA150379bF32b6d79Eeb4ff9bD280E76049a87c) - Can interact with SuperchainConfig - Allowed to pause withdrawals. In op stack systems with a proof system, the Guardian can also blacklist dispute games and set the respected game type (permissioned / permissionless) [via: DeputyPauseModule though restricted to the SuperchainConfig's `pause()` function → Optimism Guardian Multisig] Used in: [Celo](https://ethbeat.org/layer2s/projects/celo#Optimism%20EOA%201), [Cyber](https://ethbeat.org/layer2s/projects/cyber#Optimism%20EOA%201), [Funki](https://ethbeat.org/layer2s/projects/funki#Optimism%20EOA%201), [Ink](https://ethbeat.org/layer2s/projects/ink#Optimism%20EOA%201), [Lisk](https://ethbeat.org/layer2s/projects/lisk#Optimism%20EOA%201), [Settlus](https://ethbeat.org/layer2s/projects/settlus#Optimism%20EOA%201), [Shape](https://ethbeat.org/layer2s/projects/shape#Optimism%20EOA%201), [Soneium](https://ethbeat.org/layer2s/projects/soneium#Optimism%20EOA%201), [Unichain](https://ethbeat.org/layer2s/projects/unichain#Optimism%20EOA%201), [World Chain](https://ethbeat.org/layer2s/projects/world#Optimism%20EOA%201) ### OP Mainnet #### Actors ##### SafeL2 Addresses: [0x3F3Cd78Ef9Bd85961C0729E6BbB11E94Ca6f61D2](https://optimistic.etherscan.io/address/0x3F3Cd78Ef9Bd85961C0729E6BbB11E94Ca6f61D2) A Multisig with 6/9 threshold. It uses the following modules: SaferSafes. Member of MintManagerOwner. - Can interact with MintManager - can mint OP up to the hardcoded inflation cap [via: MintManagerOwner] Participants (9): [0xb8CF6C0425FD799D617351C24fF35B493eD06Cb4](https://optimistic.etherscan.io/address/0xb8CF6C0425FD799D617351C24fF35B493eD06Cb4), [0x510Aede8bDB9Fe5278C4ca13D5419922cb41f926](https://optimistic.etherscan.io/address/0x510Aede8bDB9Fe5278C4ca13D5419922cb41f926), [0x23d85C88792454DcCffD460bC06C349A21aDb102](https://optimistic.etherscan.io/address/0x23d85C88792454DcCffD460bC06C349A21aDb102), [0x2eFd8FCbF4a120372e94baFaaA2E12783e1062A5](https://optimistic.etherscan.io/address/0x2eFd8FCbF4a120372e94baFaaA2E12783e1062A5), [0xDD086e652f81FBDe8b2148Cc026D357De15d77c1](https://optimistic.etherscan.io/address/0xDD086e652f81FBDe8b2148Cc026D357De15d77c1), [0xB2433A0C418Bda24a771489918EF3a7EBC57e24C](https://optimistic.etherscan.io/address/0xB2433A0C418Bda24a771489918EF3a7EBC57e24C), [0xa564C83958f7F9fA5a255a540EF5e49445873104](https://optimistic.etherscan.io/address/0xa564C83958f7F9fA5a255a540EF5e49445873104), [0x7F1D4FE689B73B628285454667B93cfd09409f27](https://optimistic.etherscan.io/address/0x7F1D4FE689B73B628285454667B93cfd09409f27), [0xe4149Acb6F5DA74b760a1007F05FB5514F3351ea](https://optimistic.etherscan.io/address/0xe4149Acb6F5DA74b760a1007F05FB5514F3351ea) ##### MintManager Addresses: [0x5C4e7Ba1E219E47948e6e3F55019A647bA501005](https://optimistic.etherscan.io/address/0x5C4e7Ba1E219E47948e6e3F55019A647bA501005) Controls the OP inflation rate, which is currently hardcoded to 2% annually. - Can interact with OPToken - can mint OP tokens ##### SaferSafes Addresses: [0xA8447329e52F64AED2bFc9E7a2506F7D369f483a](https://optimistic.etherscan.io/address/0xA8447329e52F64AED2bFc9E7a2506F7D369f483a) - Can interact with MintManager - can mint OP up to the hardcoded inflation cap [via: SafeL2 → MintManagerOwner] ##### MintManagerOwner Addresses: [0x2A82Ae142b2e62Cb7D10b55E323ACB1Cab663a26](https://optimistic.etherscan.io/address/0x2A82Ae142b2e62Cb7D10b55E323ACB1Cab663a26) A Multisig with 1/1 threshold. Participants (1): [0x3F3Cd78Ef9Bd85961C0729E6BbB11E94Ca6f61D2](https://ethbeat.org/layer2s/projects/op-mainnet#SafeL2) (SafeL2) ## Smart contracts **Note:** Contracts presented in this section had their implementations updated since the last time our team looked at this project. The information presented may be inaccurate. ![A diagram of the smart contract architecture](https://ethbeat.org/static/images/architecture/opstack-rollup-superchain-opfp-permissionless.111c6297.png) Explore these contracts and permissions in Disco, ETHBEAT's contract explorer: https://disco.l2beat.com/ui/p/optimism ### Ethereum #### SystemConfig Addresses: [0x229047fed2591dbec1eF1118d64F7aF3dB9EB290](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code), [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 20, Last upgrade: 1mo 10d ago, Avg upgrade interval: 1mo 29d) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA)) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA)) - 2026-06-25 23:05 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x42Ad0173051225Ac784100e9acD43349707F4db9](https://etherscan.io/address/0x42Ad0173051225Ac784100e9acD43349707F4db9#code) ([diff](https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9)) - 2026-02-09 20:10 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xd392c27B84b1cA776528F2704BC67B82a62132d2](https://etherscan.io/address/0xd392c27B84b1cA776528F2704BC67B82a62132d2#code) ([diff](https://disco.l2beat.com/diff/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2)) - 2025-11-25 17:46 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED](https://etherscan.io/address/0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED#code) ([diff](https://disco.l2beat.com/diff/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED)) - 2025-10-02 16:35 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557](https://etherscan.io/address/0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557#code) ([diff](https://disco.l2beat.com/diff/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557)) - 2025-07-24 17:47 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa](https://etherscan.io/address/0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa#code) ([diff](https://disco.l2beat.com/diff/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa)) - 2025-04-24 16:16 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x340f923E5c7cbB2171146f64169EC9d5a9FfE647](https://etherscan.io/address/0x340f923E5c7cbB2171146f64169EC9d5a9FfE647#code) ([diff](https://disco.l2beat.com/diff/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647)) - 2025-04-02 16:50 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x760C48C62A85045A6B69f07F4a9f22868659CbCc](https://etherscan.io/address/0x760C48C62A85045A6B69f07F4a9f22868659CbCc#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc)) - 2025-01-24 14:41 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350](https://etherscan.io/tx/0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2025-01-24 14:41 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350](https://etherscan.io/tx/0x86da7386a26978c3db89e97c1f4feee613a8a0c07bbe4640624b05276f49c350), implementations: [0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375](https://etherscan.io/address/0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375)) - 2024-06-10 16:42 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 16:42 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xF56D96B2535B932656d3c04Ebf51baBff241D886](https://etherscan.io/address/0xF56D96B2535B932656d3c04Ebf51baBff241D886#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886)) - 2024-04-11 20:49 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1](https://etherscan.io/address/0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xba2492e52F45651B60B8B38d4Ea5E2390C64Ffb1)) - 2024-02-26 21:44 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314](https://etherscan.io/address/0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314#code) ([diff](https://disco.l2beat.com/diff/eth:0x5efa852e92800D1C982711761e45c3FE39a2b6D8/eth:0x33A032ec93Ec0C492Ec4BF0B30D5f51986E5a314)) - 2023-06-06 15:58 UTC, deployment of [SystemConfig](https://etherscan.io/address/0x229047fed2591dbec1eF1118d64F7aF3dB9EB290#code): transaction [0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537](https://etherscan.io/tx/0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537), implementations: [0x5efa852e92800D1C982711761e45c3FE39a2b6D8](https://etherscan.io/address/0x5efa852e92800D1C982711761e45c3FE39a2b6D8#code) Contains configuration parameters such as the Sequencer address, gas limit on this chain and the unsafe block signer address. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner - **batcherHash**: EOA 1 - **owner**: OpFoundationUpgradeSafe; ultimately SaferSafes Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#SystemConfig), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SystemConfig), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SystemConfig), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#SystemConfig) #### DisputeGameFactory Addresses: [0xe5965Ab5962eDc7477C8520243A95517CD252fA9](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code), [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 11, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 15d) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-06-25 23:05 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-02-09 20:10 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c](https://etherscan.io/address/0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c#code) ([diff](https://disco.l2beat.com/diff/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c)) - 2025-11-25 17:46 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x74Fac1D45B98bae058F8F566201c9A81B85C7D50](https://etherscan.io/address/0x74Fac1D45B98bae058F8F566201c9A81B85C7D50#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50)) - 2025-10-02 16:35 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-07-24 17:47 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-04-02 16:50 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x4bbA758F006Ef09402eF31724203F316ab74e4a0](https://etherscan.io/address/0x4bbA758F006Ef09402eF31724203F316ab74e4a0#code) ([diff](https://disco.l2beat.com/diff/eth:0xc641A33cab81C559F2bd4b21EA34C290E2440C2B/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0)) - 2024-05-16 19:17 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0xe5965Ab5962eDc7477C8520243A95517CD252fA9#code): transaction [0x2c16c813ff50e9e09a3c58508a9b90293c896f1f91534d09a5002f50bc8760ff](https://etherscan.io/tx/0x2c16c813ff50e9e09a3c58508a9b90293c896f1f91534d09a5002f50bc8760ff), implementations: [0xc641A33cab81C559F2bd4b21EA34C290E2440C2B](https://etherscan.io/address/0xc641A33cab81C559F2bd4b21EA34C290E2440C2B#code) The dispute game factory allows the creation of dispute games, used to propose state roots and eventually challenge them. This variant exposes per-type reads only; the legacy array views (gameImpls[], initBonds[]) were removed in the new implementation. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner - **owner**: SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://ethbeat.org/layer2s/projects/aevo#DisputeGameFactory), [BOB](https://ethbeat.org/layer2s/projects/bob#DisputeGameFactory), [Ink](https://ethbeat.org/layer2s/projects/ink#DisputeGameFactory), [Metal](https://ethbeat.org/layer2s/projects/metal#DisputeGameFactory), [Mode Network](https://ethbeat.org/layer2s/projects/mode#DisputeGameFactory), [Nillion](https://ethbeat.org/layer2s/projects/nillion#DisputeGameFactory), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#DisputeGameFactory), [Phala](https://ethbeat.org/layer2s/projects/phala#DisputeGameFactory), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#DisputeGameFactory), [Settlus](https://ethbeat.org/layer2s/projects/settlus#DisputeGameFactory), [Shape](https://ethbeat.org/layer2s/projects/shape#DisputeGameFactory), [Soneium](https://ethbeat.org/layer2s/projects/soneium#DisputeGameFactory), [Unichain](https://ethbeat.org/layer2s/projects/unichain#DisputeGameFactory), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#DisputeGameFactory), [World Chain](https://ethbeat.org/layer2s/projects/world#DisputeGameFactory), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#DisputeGameFactory), [Zora](https://ethbeat.org/layer2s/projects/zora#DisputeGameFactory) #### SuperchainConfig Addresses: [0x95703e0982140D16f8ebA6d158FccEde42f04a4C](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code), [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 11, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 24d) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504)) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504)) - 2026-06-25 23:05 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550](https://etherscan.io/address/0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550#code) ([diff](https://disco.l2beat.com/diff/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550)) - 2025-11-25 17:46 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0xb08Cc720F511062537ca78BdB0AE691F04F5a957](https://etherscan.io/address/0xb08Cc720F511062537ca78BdB0AE691F04F5a957#code) ([diff](https://disco.l2beat.com/diff/eth:0xCe28685EB204186b557133766eCA00334EB441E4/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957)) - 2025-07-24 17:47 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xCe28685EB204186b557133766eCA00334EB441E4](https://etherscan.io/address/0xCe28685EB204186b557133766eCA00334EB441E4#code) ([diff](https://disco.l2beat.com/diff/eth:0x4da82a327773965b8d4D85Fa3dB8249b387458E7/eth:0xCe28685EB204186b557133766eCA00334EB441E4)) - 2025-04-02 16:50 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x4da82a327773965b8d4D85Fa3dB8249b387458E7](https://etherscan.io/address/0x4da82a327773965b8d4D85Fa3dB8249b387458E7#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x4da82a327773965b8d4D85Fa3dB8249b387458E7)) - 2024-06-10 18:29 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0](https://etherscan.io/tx/0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x53c165169401764778F780a69701385eb0FF19B7/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 18:29 UTC, upgrade of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0](https://etherscan.io/tx/0xe361c0d4ae3aebc94b3f281ee372fbb1cbdb0c33ca8b1b35e7f3b009b2fcbdb0), implementations: [0x53c165169401764778F780a69701385eb0FF19B7](https://etherscan.io/address/0x53c165169401764778F780a69701385eb0FF19B7#code) ([diff](https://disco.l2beat.com/diff/eth:0x53c165169401764778F780a69701385eb0FF19B7/eth:0x53c165169401764778F780a69701385eb0FF19B7)) - 2024-01-22 20:19 UTC, deployment of [SuperchainConfig](https://etherscan.io/address/0x95703e0982140D16f8ebA6d158FccEde42f04a4C#code): transaction [0x8ba0e42b89cde22310b644ed30fd44e4a348619a165a54c908e7dc341e9bbd0c](https://etherscan.io/tx/0x8ba0e42b89cde22310b644ed30fd44e4a348619a165a54c908e7dc341e9bbd0c), implementations: [0x53c165169401764778F780a69701385eb0FF19B7](https://etherscan.io/address/0x53c165169401764778F780a69701385eb0FF19B7#code) Used to manage global configuration values for multiple OP Chains within a single Superchain network. The SuperchainConfig contract manages individual pause states for each chain connected to it, as well as a global pause state for all chains. The guardian role can pause either separately, but each pause expires after 3 months if left untouched. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner - **guardian**: Optimism Guardian Multisig; ultimately OpFoundationUpgradeSafe, Optimism EOA 1, Optimism Security Council, SaferSafes Can be upgraded by: SuperchainProxyAdminOwner with no delay Proxy used in: [Celo](https://ethbeat.org/layer2s/projects/celo#SuperchainConfig), [Cyber](https://ethbeat.org/layer2s/projects/cyber#SuperchainConfig), [Funki](https://ethbeat.org/layer2s/projects/funki#SuperchainConfig), [Ink](https://ethbeat.org/layer2s/projects/ink#SuperchainConfig), [Lisk](https://ethbeat.org/layer2s/projects/lisk#SuperchainConfig), [Settlus](https://ethbeat.org/layer2s/projects/settlus#SuperchainConfig), [Shape](https://ethbeat.org/layer2s/projects/shape#SuperchainConfig), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SuperchainConfig), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SuperchainConfig), [World Chain](https://ethbeat.org/layer2s/projects/world#SuperchainConfig) Implementation used in: [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#SuperchainConfig) #### L1CrossDomainMessenger Addresses: [0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code), [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 21, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 29d) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-06-25 23:05 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-02-09 20:10 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-11-25 17:46 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-10-02 16:35 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x22D12E0FAebD62d429514A65EBAe32dd316c12D6](https://etherscan.io/address/0x22D12E0FAebD62d429514A65EBAe32dd316c12D6#code) ([diff](https://disco.l2beat.com/diff/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6)) - 2025-07-24 17:47 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54](https://etherscan.io/address/0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54#code) ([diff](https://disco.l2beat.com/diff/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54)) - 2025-04-24 16:16 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x5D5a095665886119693F0B41d8DFeE78da033e8B](https://etherscan.io/address/0x5D5a095665886119693F0B41d8DFeE78da033e8B#code) ([diff](https://disco.l2beat.com/diff/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B)) - 2025-04-02 16:50 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231](https://etherscan.io/address/0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231)) - 2024-04-11 20:49 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65](https://etherscan.io/address/0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65)) - 2024-02-26 21:44 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6](https://etherscan.io/address/0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6#code) ([diff](https://disco.l2beat.com/diff/eth:0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43/eth:0xa95B24af19f8907390eD15f8348A1a5e6Ccbc5C6)) - 2023-06-06 18:24 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43](https://etherscan.io/address/0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43#code) ([diff](https://disco.l2beat.com/diff/eth:0x0000000000000000000000000000000000000000/eth:0x2150Bc3c64cbfDDbaC9815EF615D6AB8671bfe43)) - 2023-06-06 15:58 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537](https://etherscan.io/tx/0x76bceccd7d44656f5a129a600a6120091570b897c1d45c18cd7134cfe67c2537), implementations: [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code) ([diff](https://disco.l2beat.com/diff/eth:0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5/eth:0x0000000000000000000000000000000000000000)) - 2021-11-11 19:29 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xbabb37235bd38ae5a29717590eedfd9b02f84a12b890b2126feac68f223d7448](https://etherscan.io/tx/0xbabb37235bd38ae5a29717590eedfd9b02f84a12b890b2126feac68f223d7448), implementations: [0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5](https://etherscan.io/address/0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5#code) ([diff](https://disco.l2beat.com/diff/eth:0x0000000000000000000000000000000000000000/eth:0xd9166833FF12A5F900ccfBf2c8B62a90F1Ca1FD5)) - 2021-11-11 17:37 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x2625aa2013fd1a650fb0264d2746be597e12f846baa48a68fe14539c200ed6dc](https://etherscan.io/tx/0x2625aa2013fd1a650fb0264d2746be597e12f846baa48a68fe14539c200ed6dc), implementations: [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code) ([diff](https://disco.l2beat.com/diff/eth:0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0/eth:0x0000000000000000000000000000000000000000)) - 2021-06-26 00:52 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0x98a05fb521b3349dd92cff2e104d78c6c318add003bb501c0d416b2b4d75df8a](https://etherscan.io/tx/0x98a05fb521b3349dd92cff2e104d78c6c318add003bb501c0d416b2b4d75df8a), implementations: [0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0](https://etherscan.io/address/0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0#code) ([diff](https://disco.l2beat.com/diff/eth:0x16393737D09d2722AD13DcA3cA8C3DB957699F1D/eth:0xbfba066b5cA610Fe70AdCE45FcB622F945891bb0)) - 2021-06-22 22:29 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x25ace71c97B33Cc4729CF772ae268934F7ab5fA1#code): transaction [0xd19d40f11c375feeea5fe47576ce98a3a08caac68b2a8a52fb95dd1a76dd205a](https://etherscan.io/tx/0xd19d40f11c375feeea5fe47576ce98a3a08caac68b2a8a52fb95dd1a76dd205a), implementations: [0x16393737D09d2722AD13DcA3cA8C3DB957699F1D](https://etherscan.io/address/0x16393737D09d2722AD13DcA3cA8C3DB957699F1D#code) Sends messages from host chain to this chain, and relays messages back onto host chain. In the event that a message sent from host chain to this chain is rejected for exceeding this chain's epoch gas limit, it can be resubmitted via this contract's replay function. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://ethbeat.org/layer2s/projects/aevo#L1CrossDomainMessenger), [BOB](https://ethbeat.org/layer2s/projects/bob#L1CrossDomainMessenger), [Ink](https://ethbeat.org/layer2s/projects/ink#L1CrossDomainMessenger), [Metal](https://ethbeat.org/layer2s/projects/metal#L1CrossDomainMessenger), [Mode Network](https://ethbeat.org/layer2s/projects/mode#L1CrossDomainMessenger), [Nillion](https://ethbeat.org/layer2s/projects/nillion#L1CrossDomainMessenger), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#L1CrossDomainMessenger), [Phala](https://ethbeat.org/layer2s/projects/phala#L1CrossDomainMessenger), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#L1CrossDomainMessenger), [Settlus](https://ethbeat.org/layer2s/projects/settlus#L1CrossDomainMessenger), [Shape](https://ethbeat.org/layer2s/projects/shape#L1CrossDomainMessenger), [Soneium](https://ethbeat.org/layer2s/projects/soneium#L1CrossDomainMessenger), [Unichain](https://ethbeat.org/layer2s/projects/unichain#L1CrossDomainMessenger), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#L1CrossDomainMessenger), [World Chain](https://ethbeat.org/layer2s/projects/world#L1CrossDomainMessenger), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#L1CrossDomainMessenger), [Zora](https://ethbeat.org/layer2s/projects/zora#L1CrossDomainMessenger) #### L1ERC721Bridge Addresses: [0x5a7749f83b81B301cAb5f48EB8516B986DAef23D](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code), [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 17, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 22d) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-06-25 23:05 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-02-09 20:10 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-11-25 17:46 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x7f1d12fB2911EB095278085f721e644C1f675696/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-10-02 16:35 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x7f1d12fB2911EB095278085f721e644C1f675696](https://etherscan.io/address/0x7f1d12fB2911EB095278085f721e644C1f675696#code) ([diff](https://disco.l2beat.com/diff/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F/eth:0x7f1d12fB2911EB095278085f721e644C1f675696)) - 2025-07-24 17:47 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F](https://etherscan.io/address/0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F#code) ([diff](https://disco.l2beat.com/diff/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F)) - 2025-04-24 16:16 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013](https://etherscan.io/address/0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013#code) ([diff](https://disco.l2beat.com/diff/eth:0x276d3730f219f7ec22274f7263180b8452B46d47/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013)) - 2025-04-02 16:50 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x276d3730f219f7ec22274f7263180b8452B46d47](https://etherscan.io/address/0x276d3730f219f7ec22274f7263180b8452B46d47#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x276d3730f219f7ec22274f7263180b8452B46d47)) - 2024-04-11 20:49 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d](https://etherscan.io/address/0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d)) - 2024-02-26 21:44 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b](https://etherscan.io/address/0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b#code) ([diff](https://disco.l2beat.com/diff/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2/eth:0xc599Fa757c2bCaA5aE3753Ab129237F38C10da0b)) - 2023-06-06 18:24 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2](https://etherscan.io/address/0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2/eth:0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2)) - 2022-10-04 22:08 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code): transaction [0xe8f632050cdf538eebcc5ab4a0ecb426966acfd14118e4fb8b181948449ae70d](https://etherscan.io/tx/0xe8f632050cdf538eebcc5ab4a0ecb426966acfd14118e4fb8b181948449ae70d), implementations: [0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2](https://etherscan.io/address/0x3268Ed09f76e619331528270B6267D4d2C5Ab5C2#code) Used to bridge ERC-721 tokens from host chain to this chain. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://ethbeat.org/layer2s/projects/aevo#L1ERC721Bridge), [BOB](https://ethbeat.org/layer2s/projects/bob#L1ERC721Bridge), [Ink](https://ethbeat.org/layer2s/projects/ink#L1ERC721Bridge), [Metal](https://ethbeat.org/layer2s/projects/metal#L1ERC721Bridge), [Mode Network](https://ethbeat.org/layer2s/projects/mode#L1ERC721Bridge), [Nillion](https://ethbeat.org/layer2s/projects/nillion#L1ERC721Bridge), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#L1ERC721Bridge), [Phala](https://ethbeat.org/layer2s/projects/phala#L1ERC721Bridge), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#L1ERC721Bridge), [Settlus](https://ethbeat.org/layer2s/projects/settlus#L1ERC721Bridge), [Shape](https://ethbeat.org/layer2s/projects/shape#L1ERC721Bridge), [Soneium](https://ethbeat.org/layer2s/projects/soneium#L1ERC721Bridge), [Unichain](https://ethbeat.org/layer2s/projects/unichain#L1ERC721Bridge), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#L1ERC721Bridge), [World Chain](https://ethbeat.org/layer2s/projects/world#L1ERC721Bridge), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#L1ERC721Bridge), [Zora](https://ethbeat.org/layer2s/projects/zora#L1ERC721Bridge) #### L1StandardBridge (escrow) Addresses: [0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1](https://etherscan.io/address/0x99C9fc46f92E8a1c0deC1b1747d010903E884bE1#code), [0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891](https://etherscan.io/address/0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) The main entry point to deposit ERC20 tokens from host chain to this chain. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner All supported tokens in this escrow are included in the value secured calculation. Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://ethbeat.org/layer2s/projects/aevo#L1StandardBridge), [BOB](https://ethbeat.org/layer2s/projects/bob#L1StandardBridge), [Ink](https://ethbeat.org/layer2s/projects/ink#L1StandardBridge), [Metal](https://ethbeat.org/layer2s/projects/metal#L1StandardBridge), [Mode Network](https://ethbeat.org/layer2s/projects/mode#L1StandardBridge), [Nillion](https://ethbeat.org/layer2s/projects/nillion#L1StandardBridge), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#L1StandardBridge), [Phala](https://ethbeat.org/layer2s/projects/phala#L1StandardBridge), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#L1StandardBridge), [Settlus](https://ethbeat.org/layer2s/projects/settlus#L1StandardBridge), [Shape](https://ethbeat.org/layer2s/projects/shape#L1StandardBridge), [Soneium](https://ethbeat.org/layer2s/projects/soneium#L1StandardBridge), [Unichain](https://ethbeat.org/layer2s/projects/unichain#L1StandardBridge), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#L1StandardBridge), [World Chain](https://ethbeat.org/layer2s/projects/world#L1StandardBridge), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#L1StandardBridge), [Zora](https://ethbeat.org/layer2s/projects/zora#L1StandardBridge) #### LivenessModule Addresses: [0x0454092516c9A4d636d3CAfA1e82161376C8a748](https://etherscan.io/address/0x0454092516c9A4d636d3CAfA1e82161376C8a748#code) used to remove members inactive for 3mo 8d while making sure that the threshold remains above 75%. If the number of members falls below 8, the OpFoundationUpgradeSafe takes ownership of the multisig - Roles: - **fallbackOwner**: OpFoundationUpgradeSafe if the number of Optimism Security Council members falls below 8 - **livenessGuard**: LivenessGuard Implementation used in: [Celo](https://ethbeat.org/layer2s/projects/celo#LivenessModule), [Cyber](https://ethbeat.org/layer2s/projects/cyber#LivenessModule), [Funki](https://ethbeat.org/layer2s/projects/funki#LivenessModule), [Ink](https://ethbeat.org/layer2s/projects/ink#LivenessModule), [Lisk](https://ethbeat.org/layer2s/projects/lisk#LivenessModule), [Settlus](https://ethbeat.org/layer2s/projects/settlus#LivenessModule), [Shape](https://ethbeat.org/layer2s/projects/shape#LivenessModule), [Soneium](https://ethbeat.org/layer2s/projects/soneium#LivenessModule), [Unichain](https://ethbeat.org/layer2s/projects/unichain#LivenessModule), [World Chain](https://ethbeat.org/layer2s/projects/world#LivenessModule) #### L1DAITokenBridge Addresses: [0x10E6593CDda8c58a1d0f14C5164B376352a55f2F](https://etherscan.io/address/0x10E6593CDda8c58a1d0f14C5164B376352a55f2F#code) Custom Gateway for DAI deposits via canonical messaging. Deposited DAI is forwarded to a Vault contract. #### SuperFaultDisputeGame Addresses: [0x19AF533Cc2A2A55786DCB8672aA5717e64213208](https://etherscan.io/address/0x19AF533Cc2A2A55786DCB8672aA5717e64213208#code) Logic of the permissionless dispute game introduced in Upgrade 20. It proves a super root, a state commitment addressed by an L2 timestamp rather than by a block number. The format carries per-chain roots for a future interop set; today each game commits only to its own chain. When a state root is proposed, a game contract is cloned from this implementation; anyone posting the bond can challenge it. Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#SuperFaultDisputeGame), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SuperFaultDisputeGame) #### DelayedWETH Addresses: [0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code), [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 5, Last upgrade: 1mo 10d ago, Avg upgrade interval: 21d 21h) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xE440CC08A71694C8229323803F59024E3144630e)) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xE440CC08A71694C8229323803F59024E3144630e)) - 2026-06-25 23:05 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x1B6DBF05EaF22d4E70dC993e8a19dd9F3dcb3162#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) Contract designed to hold the bonded ETH for each game. It is designed as a wrapper around WETH to allow an owner to function as a backstop if a game would incorrectly distribute funds. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#DelayedWETH), [Katana](https://ethbeat.org/layer2s/projects/katana#DelayedWETH), [Metal](https://ethbeat.org/layer2s/projects/metal#DelayedWETH), [Mode Network](https://ethbeat.org/layer2s/projects/mode#DelayedWETH), [Nillion](https://ethbeat.org/layer2s/projects/nillion#DelayedWETH), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#DelayedWETH), [Phala](https://ethbeat.org/layer2s/projects/phala#DelayedWETH), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#DelayedWETH), [Settlus](https://ethbeat.org/layer2s/projects/settlus#DelayedWETH), [Shape](https://ethbeat.org/layer2s/projects/shape#DelayedWETH), [Soneium](https://ethbeat.org/layer2s/projects/soneium#DelayedWETH), [Unichain](https://ethbeat.org/layer2s/projects/unichain#DelayedWETH), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#DelayedWETH), [World Chain](https://ethbeat.org/layer2s/projects/world#DelayedWETH), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#DelayedWETH), [Zora](https://ethbeat.org/layer2s/projects/zora#DelayedWETH) #### PreimageOracle Addresses: [0x1E1d73536A081Ef2F355d29794547a9770Aeb1E0](https://etherscan.io/address/0x1E1d73536A081Ef2F355d29794547a9770Aeb1E0#code) The PreimageOracle contract is used to load the required data from L1 for a dispute game. Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#PreimageOracle), [Katana](https://ethbeat.org/layer2s/projects/katana#PreimageOracle), [Metal](https://ethbeat.org/layer2s/projects/metal#PreimageOracle), [Mode Network](https://ethbeat.org/layer2s/projects/mode#PreimageOracle), [Nillion](https://ethbeat.org/layer2s/projects/nillion#PreimageOracle), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#PreimageOracle), [Phala](https://ethbeat.org/layer2s/projects/phala#PreimageOracle), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#PreimageOracle), [Settlus](https://ethbeat.org/layer2s/projects/settlus#PreimageOracle), [Shape](https://ethbeat.org/layer2s/projects/shape#PreimageOracle), [Unichain](https://ethbeat.org/layer2s/projects/unichain#PreimageOracle), [World Chain](https://ethbeat.org/layer2s/projects/world#PreimageOracle), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#PreimageOracle), [Zora](https://ethbeat.org/layer2s/projects/zora#PreimageOracle) #### AnchorStateRegistry Addresses: [0x23B2C62946350F4246f9f9D027e071f0264FD113](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code), [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 8, Last upgrade: 1mo 10d ago, Avg upgrade interval: 1mo 21d) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-06-25 23:05 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-02-09 20:10 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5](https://etherscan.io/address/0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5)) - 2025-10-02 16:35 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E)) - 2025-07-24 17:47 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x23B2C62946350F4246f9f9D027e071f0264FD113#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) Contains the latest confirmed state root that can be used as a starting point in a dispute game. This variant stores respectedGameType, retirementTimestamp, and disputeGameFinalityDelaySeconds locally and drops the legacy *FromGame fields, since the AggregateVerifier model does not expose vm()/weth()/absolutePrestate() on its game implementation. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#AnchorStateRegistry), [Katana](https://ethbeat.org/layer2s/projects/katana#AnchorStateRegistry), [Metal](https://ethbeat.org/layer2s/projects/metal#AnchorStateRegistry), [Mode Network](https://ethbeat.org/layer2s/projects/mode#AnchorStateRegistry), [Nillion](https://ethbeat.org/layer2s/projects/nillion#AnchorStateRegistry), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#AnchorStateRegistry), [Phala](https://ethbeat.org/layer2s/projects/phala#AnchorStateRegistry), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#AnchorStateRegistry), [Settlus](https://ethbeat.org/layer2s/projects/settlus#AnchorStateRegistry), [Shape](https://ethbeat.org/layer2s/projects/shape#AnchorStateRegistry), [Soneium](https://ethbeat.org/layer2s/projects/soneium#AnchorStateRegistry), [Unichain](https://ethbeat.org/layer2s/projects/unichain#AnchorStateRegistry), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#AnchorStateRegistry), [World Chain](https://ethbeat.org/layer2s/projects/world#AnchorStateRegistry), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#AnchorStateRegistry), [Zora](https://ethbeat.org/layer2s/projects/zora#AnchorStateRegistry) #### ETHLockbox (escrow) Addresses: [0x322b47Ff1FA8D5611F761e3E275C45B71b294D43](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code), [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 6, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 6d) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2026-06-25 23:05 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2025-07-24 17:47 UTC, deployment of [ETHLockbox](https://etherscan.io/address/0x322b47Ff1FA8D5611F761e3E275C45B71b294D43#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0x784d2F03593A42A6E4676A012762F18775ecbBe6](https://etherscan.io/address/0x784d2F03593A42A6E4676A012762F18775ecbBe6#code) A simple escrow contract storing ETH for the canonical bridge. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner The following tokens are included in the value secured calculation: ETH Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#ETHLockbox), [Soneium](https://ethbeat.org/layer2s/projects/soneium#ETHLockbox), [Unichain](https://ethbeat.org/layer2s/projects/unichain#ETHLockbox) #### L1DAIEscrow (escrow) Addresses: [0x467194771dAe2967Aef3ECbEDD3Bf9a310C76C65](https://etherscan.io/address/0x467194771dAe2967Aef3ECbEDD3Bf9a310C76C65#code) Stores DAI deposited from the attached L1DAITokenBridge. The following tokens are included in the value secured calculation: DAI #### SuperchainProxyAdmin Addresses: [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) - Roles: - **owner**: SuperchainProxyAdminOwner Implementation used in: [Celo](https://ethbeat.org/layer2s/projects/celo#SuperchainProxyAdmin), [Cyber](https://ethbeat.org/layer2s/projects/cyber#SuperchainProxyAdmin), [Funki](https://ethbeat.org/layer2s/projects/funki#SuperchainProxyAdmin), [Ink](https://ethbeat.org/layer2s/projects/ink#SuperchainProxyAdmin), [Lisk](https://ethbeat.org/layer2s/projects/lisk#SuperchainProxyAdmin), [Settlus](https://ethbeat.org/layer2s/projects/settlus#SuperchainProxyAdmin), [Shape](https://ethbeat.org/layer2s/projects/shape#SuperchainProxyAdmin), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SuperchainProxyAdmin), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SuperchainProxyAdmin), [World Chain](https://ethbeat.org/layer2s/projects/world#SuperchainProxyAdmin) #### SuperPermissionedDisputeGame Addresses: [0x5C3eb47cB0174aea522a2a9Ae79487139A53D691](https://etherscan.io/address/0x5C3eb47cB0174aea522a2a9Ae79487139A53D691#code) Logic of the permissioned dispute game introduced in Upgrade 20. Only the proposer configured in the DisputeGameFactory can create games of this type, and each one commits to a super root anchored to an L2 timestamp. Unlike the permissioned game it replaces, it runs no VM and exposes no challenger, bond, clock or absolute prestate: validity is governed by the AnchorStateRegistry and the Guardian. Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#SuperPermissionedDisputeGame), [Soneium](https://ethbeat.org/layer2s/projects/soneium#SuperPermissionedDisputeGame), [Unichain](https://ethbeat.org/layer2s/projects/unichain#SuperPermissionedDisputeGame), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#SuperPermissionedDisputeGame) #### SynthetixBridgeEscrow (escrow) Addresses: [0x5Fd79D46EBA7F351fe49BFF9E87cdeA6c821eF9f](https://etherscan.io/address/0x5Fd79D46EBA7F351fe49BFF9E87cdeA6c821eF9f#code) Synthetix-governed custom escrow for SNX bridged via canonical messaging. Its additional trust assumptions put it outside the ossification perimeter. The following tokens are included in the value secured calculation: SNX #### OptimismMintableERC20Factory Addresses: [0x75505a97BD334E7BD3C476893285569C4136Fa0F](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code), [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 13, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 29d) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-06-25 23:05 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-02-09 20:10 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-11-25 17:46 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x5493f4677A186f64805fe7317D6993ba4863988F/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-04-02 16:50 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x5493f4677A186f64805fe7317D6993ba4863988F](https://etherscan.io/address/0x5493f4677A186f64805fe7317D6993ba4863988F#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x5493f4677A186f64805fe7317D6993ba4863988F)) - 2024-04-11 20:49 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846](https://etherscan.io/address/0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846)) - 2024-02-26 21:44 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD](https://etherscan.io/address/0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD#code) ([diff](https://disco.l2beat.com/diff/eth:0xaE849EFA4BcFc419593420e14707996936E365E2/eth:0x74e273220Fa1cB62Fd756FE6CbDA8BBb89404deD)) - 2023-06-06 18:24 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0x75505a97BD334E7BD3C476893285569C4136Fa0F#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0xaE849EFA4BcFc419593420e14707996936E365E2](https://etherscan.io/address/0xaE849EFA4BcFc419593420e14707996936E365E2#code) A helper contract that generates OptimismMintableERC20 contracts on the network it's deployed to. OptimismMintableERC20 is a standard extension of the base ERC20 token contract designed to allow the L1StandardBridge contracts to mint and burn tokens. This makes it possible to use an OptimismMintableERC20 as this chain's representation of a token on the host chain, or vice-versa. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://ethbeat.org/layer2s/projects/aevo#OptimismMintableERC20Factory), [BOB](https://ethbeat.org/layer2s/projects/bob#OptimismMintableERC20Factory), [Ink](https://ethbeat.org/layer2s/projects/ink#OptimismMintableERC20Factory), [Metal](https://ethbeat.org/layer2s/projects/metal#OptimismMintableERC20Factory), [Mode Network](https://ethbeat.org/layer2s/projects/mode#OptimismMintableERC20Factory), [Nillion](https://ethbeat.org/layer2s/projects/nillion#OptimismMintableERC20Factory), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#OptimismMintableERC20Factory), [Phala](https://ethbeat.org/layer2s/projects/phala#OptimismMintableERC20Factory), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#OptimismMintableERC20Factory), [Settlus](https://ethbeat.org/layer2s/projects/settlus#OptimismMintableERC20Factory), [Shape](https://ethbeat.org/layer2s/projects/shape#OptimismMintableERC20Factory), [Soneium](https://ethbeat.org/layer2s/projects/soneium#OptimismMintableERC20Factory), [Unichain](https://ethbeat.org/layer2s/projects/unichain#OptimismMintableERC20Factory), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#OptimismMintableERC20Factory), [World Chain](https://ethbeat.org/layer2s/projects/world#OptimismMintableERC20Factory), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#OptimismMintableERC20Factory), [Zora](https://ethbeat.org/layer2s/projects/zora#OptimismMintableERC20Factory) #### wstETHEscrow (escrow) Addresses: [0x76943C0D61395d8F2edF9060e1533529cAe05dE6](https://etherscan.io/address/0x76943C0D61395d8F2edF9060e1533529cAe05dE6#code), [0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4](https://etherscan.io/address/0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4#code) (Implementation (Upgradable)), [0x3e40D73EB977Dc6a537aF587D48316feE66E9C8c](https://etherscan.io/address/0x3e40D73EB977Dc6a537aF587D48316feE66E9C8c#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 2y ago, Avg upgrade interval: 2y 1mo) - 2024-10-11 16:21 UTC, upgrade of [wstETHEscrow](https://etherscan.io/address/0x76943C0D61395d8F2edF9060e1533529cAe05dE6#code): transaction [0xc7bc3019721ecf320698f2897b329d1930f64661100a5fa159181146088e03c2](https://etherscan.io/tx/0xc7bc3019721ecf320698f2897b329d1930f64661100a5fa159181146088e03c2), implementations: [0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4](https://etherscan.io/address/0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4#code) ([diff](https://disco.l2beat.com/diff/eth:0x29C5c51A031165CE62F964966A6399b81165EFA4/eth:0x168Cfea1Ad879d7032B3936eF3b0E90790b6B6D4)) - 2022-08-05 08:23 UTC, deployment of [wstETHEscrow](https://etherscan.io/address/0x76943C0D61395d8F2edF9060e1533529cAe05dE6#code): transaction [0x1bc90e7c6fe12e03691f7eccf025f3a244ea5a4888c7fb274f45f5e1004110ca](https://etherscan.io/tx/0x1bc90e7c6fe12e03691f7eccf025f3a244ea5a4888c7fb274f45f5e1004110ca), implementations: [0x29C5c51A031165CE62F964966A6399b81165EFA4](https://etherscan.io/address/0x29C5c51A031165CE62F964966A6399b81165EFA4#code) Lido custom escrow for wstETH tokens that uses the canonical bridge for messaging but is governed externally. The following tokens are included in the value secured calculation: wstETH #### DeputyPauseModule Addresses: [0x76fC2F971FB355D0453cF9F64d3F9E4f640E1754](https://etherscan.io/address/0x76fC2F971FB355D0453cF9F64d3F9E4f640E1754#code) Allows 0x2fA150379bF32b6d79Eeb4ff9bD280E76049a87c, called the deputy pauser, to act on behalf of the OpFoundationUpgradeSafe if set as its Safe module. - Roles: - **deputy**: Optimism EOA 1 though restricted to the SuperchainConfig's `pause()` function Implementation used in: [Celo](https://ethbeat.org/layer2s/projects/celo#DeputyPauseModule), [Cyber](https://ethbeat.org/layer2s/projects/cyber#DeputyPauseModule), [Funki](https://ethbeat.org/layer2s/projects/funki#DeputyPauseModule), [Ink](https://ethbeat.org/layer2s/projects/ink#DeputyPauseModule), [Lisk](https://ethbeat.org/layer2s/projects/lisk#DeputyPauseModule), [Settlus](https://ethbeat.org/layer2s/projects/settlus#DeputyPauseModule), [Shape](https://ethbeat.org/layer2s/projects/shape#DeputyPauseModule), [Soneium](https://ethbeat.org/layer2s/projects/soneium#DeputyPauseModule), [Unichain](https://ethbeat.org/layer2s/projects/unichain#DeputyPauseModule), [World Chain](https://ethbeat.org/layer2s/projects/world#DeputyPauseModule) #### FeesCollector Addresses: [0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa](https://etherscan.io/address/0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa#code), [0xE8E847cf573Fc8ed75621660A36AffD18c543d7E](https://etherscan.io/address/0xE8E847cf573Fc8ed75621660A36AffD18c543d7E#code) (Implementation (Upgradable)) Collecting sequencer, base- and L1 fees from L2. #### MIPS Addresses: [0xaCc005DCd857B401e4732E6F7837135A22825cfA](https://etherscan.io/address/0xaCc005DCd857B401e4732E6F7837135A22825cfA#code) The MIPS contract is used to execute the final step of the dispute game which objectively determines the winner of the dispute. Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#MIPS), [Katana](https://ethbeat.org/layer2s/projects/katana#MIPS), [Metal](https://ethbeat.org/layer2s/projects/metal#MIPS), [Mode Network](https://ethbeat.org/layer2s/projects/mode#MIPS), [Nillion](https://ethbeat.org/layer2s/projects/nillion#MIPS), [Orderly Network](https://ethbeat.org/layer2s/projects/orderly#MIPS), [Phala](https://ethbeat.org/layer2s/projects/phala#MIPS), [Ronin](https://ethbeat.org/layer2s/projects/ronin-network#MIPS), [Settlus](https://ethbeat.org/layer2s/projects/settlus#MIPS), [Shape](https://ethbeat.org/layer2s/projects/shape#MIPS), [Unichain](https://ethbeat.org/layer2s/projects/unichain#MIPS), [World Chain](https://ethbeat.org/layer2s/projects/world#MIPS), [Zircuit](https://ethbeat.org/layer2s/projects/zircuit#MIPS), [Zora](https://ethbeat.org/layer2s/projects/zora#MIPS) **Warning:** There are impactful changes to the following contracts, and part of the information might be outdated. #### OptimismPortal2 (impactful change) Addresses: [0xbEb5Fc579115071764c7423A4f12eDde41f106Ed](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code), [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) (Implementation (Upgradable)), [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) (Admin) **Past upgrades** (Count of upgrades: 18, Last upgrade: 1mo 10d ago, Avg upgrade interval: 2mo 5d) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x1005217ad392DC64CEf501FA1777A27D42166748)) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a](https://etherscan.io/tx/0x0a0fe86f7b1a3d3d2d0be990e3f8b15628b885363ae527fa9548cb2c2375741a), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x1005217ad392DC64CEf501FA1777A27D42166748)) - 2026-06-25 23:05 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-06-25 23:05 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15](https://etherscan.io/tx/0xbfdac60c9687a2e469159bf2458e73de2915a0a5eb53c4991a7ecde2b1fb3f15), implementations: [0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2](https://etherscan.io/address/0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2)) - 2026-02-09 20:10 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37](https://etherscan.io/tx/0x8808cd53114e4cf07bfde30daf24f2984d4a40ab09c5ca67bd171ac29d6dbf37), implementations: [0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B](https://etherscan.io/address/0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B#code) ([diff](https://disco.l2beat.com/diff/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B)) - 2025-11-25 17:46 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5](https://etherscan.io/tx/0xf556934cb4de1ab40a4cfba17856cd601cbc8b875b96a9ccd8ee32bcd363abf5), implementations: [0x7Cf803296662e8C72A6C1d6450572209aCF7f202](https://etherscan.io/address/0x7Cf803296662e8C72A6C1d6450572209aCF7f202#code) ([diff](https://disco.l2beat.com/diff/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202)) - 2025-10-02 16:35 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329](https://etherscan.io/tx/0x744cf7d28324729cace731ac736872da669439a0d380f1f52b8d31af203f7329), implementations: [0x381E729FF983FA4BCEd820e7b922d79bF653B999](https://etherscan.io/address/0x381E729FF983FA4BCEd820e7b922d79bF653B999#code) ([diff](https://disco.l2beat.com/diff/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999)) - 2025-07-24 17:47 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716](https://etherscan.io/tx/0x46acdce174c8d83ebe2f208d8c76c867e75617483d64c3e407f69ae2f9868716), implementations: [0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a](https://etherscan.io/address/0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a#code) ([diff](https://disco.l2beat.com/diff/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a)) - 2025-04-24 16:16 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12](https://etherscan.io/tx/0xbe44244e352a9ffa67ad7f7133e9ed014b380e4b1bd789419e6d33aaad780d12), implementations: [0xB443Da3e07052204A02d630a8933dAc05a0d6fB4](https://etherscan.io/address/0xB443Da3e07052204A02d630a8933dAc05a0d6fB4#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4)) - 2025-04-02 16:50 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29](https://etherscan.io/tx/0x5f3530e593bbac37c61dc5b7755b6a40c06c20c1a3a1b13fca5b7d00cde65c29), implementations: [0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd](https://etherscan.io/address/0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd)) - 2024-06-10 16:42 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-06-10 16:42 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61](https://etherscan.io/tx/0xbe810ed6e1e827930bd46cde42c4883662ddb6d244a26af2f0409cc2782bee61), implementations: [0xe2F826324b2faf99E513D16D266c3F80aE87832B](https://etherscan.io/address/0xe2F826324b2faf99E513D16D266c3F80aE87832B#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B)) - 2024-04-11 20:49 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D778797049FE9259d947D1ED8e5442226dFB589/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-04-11 20:49 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2](https://etherscan.io/tx/0x4758bd62359bc69d7e8a0faaf5308d826379c23258d689a7430d5c0ad0361ad2), implementations: [0x2D778797049FE9259d947D1ED8e5442226dFB589](https://etherscan.io/address/0x2D778797049FE9259d947D1ED8e5442226dFB589#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x2D778797049FE9259d947D1ED8e5442226dFB589)) - 2024-02-26 21:44 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2024-02-26 21:44 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50](https://etherscan.io/tx/0x3f7c36a1d636cdb23bf4f9171c27ebe58b73f4c0e6a33dbaac2c2f3c142faf50), implementations: [0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de](https://etherscan.io/address/0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de#code) ([diff](https://disco.l2beat.com/diff/eth:0x28a55488fef40005309e2DA0040DbE9D300a64AB/eth:0xaBAbe63514dDd6277356F8cc3d6518aA8BDEB4de)) - 2023-06-06 18:24 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0xbEb5Fc579115071764c7423A4f12eDde41f106Ed#code): transaction [0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268](https://etherscan.io/tx/0xe2ff41f9bdf03d5455f55539b8b9c350276a179ca7f79322e2077d7c1ffb1268), implementations: [0x28a55488fef40005309e2DA0040DbE9D300a64AB](https://etherscan.io/address/0x28a55488fef40005309e2DA0040DbE9D300a64AB#code) The OptimismPortal contract is the main entry point to deposit funds from L1 to L2. It also allows to prove and finalize withdrawals. It specifies which game type can be used for withdrawals, which currently is the SuperFaultDisputeGame. - Roles: - **admin**: SuperchainProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://ethbeat.org/layer2s/projects/ink#OptimismPortal2), [Soneium](https://ethbeat.org/layer2s/projects/soneium#OptimismPortal2), [Unichain](https://ethbeat.org/layer2s/projects/unichain#OptimismPortal2), [Whitechain](https://ethbeat.org/layer2s/projects/whitechain#OptimismPortal2) ### OP Mainnet #### DeployerWhitelist Addresses: [0x4200000000000000000000000000000000000002](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000002#code), [0xc0d3c0d3C0d3c0D3c0d3C0D3c0d3C0d3c0D30002](https://optimistic.etherscan.io/address/0xc0d3c0d3C0d3c0D3c0d3C0D3c0d3C0d3c0D30002#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) Legacy contract that was originally used to act as a whitelist of addresses allowed to the Optimism network. Fully unused and deprecated since the Bedrock upgrade. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L2CrossDomainMessenger Addresses: [0x4200000000000000000000000000000000000007](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007#code), [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://optimistic.etherscan.io/address/0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [L2CrossDomainMessenger](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2CrossDomainMessenger](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://optimistic.etherscan.io/address/0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96#code) The L2CrossDomainMessenger (L2xDM) contract sends messages from L2 to L1, and relays messages from L1 onto L2 with a system tx. In the event that a message sent from L2 to L1 is rejected for exceeding the L1 gas limit, it can be resubmitted via this contract’s replay function. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### GasPriceOracle Addresses: [0x420000000000000000000000000000000000000F](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code), [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://optimistic.etherscan.io/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 4, Last upgrade: 3mo 28d ago, Avg upgrade interval: 6mo 13d) - 2026-07-08 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://optimistic.etherscan.io/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/oeth:0x547d0fba434877D7237d511cF87FABe2ee26b152)) - 2025-12-02 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9](https://optimistic.etherscan.io/tx/0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9), implementations: [0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1](https://optimistic.etherscan.io/address/0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1#code) ([diff](https://disco.l2beat.com/diff/oeth:0x93e57A196454CB919193fa9946f14943cf733845/oeth:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1)) - 2025-05-09 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30](https://optimistic.etherscan.io/tx/0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30), implementations: [0x93e57A196454CB919193fa9946f14943cf733845](https://optimistic.etherscan.io/address/0x93e57A196454CB919193fa9946f14943cf733845#code) ([diff](https://disco.l2beat.com/diff/oeth:0xa919894851548179A0750865e7974DA599C0Fac7/oeth:0x93e57A196454CB919193fa9946f14943cf733845)) - 2024-07-10 16:00 UTC, upgrade of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0x2f63bbe08a66796dde569281a58a53e0b0f64b7aa067297e9c70455fb8e375bc](https://optimistic.etherscan.io/tx/0x2f63bbe08a66796dde569281a58a53e0b0f64b7aa067297e9c70455fb8e375bc), implementations: [0xa919894851548179A0750865e7974DA599C0Fac7](https://optimistic.etherscan.io/address/0xa919894851548179A0750865e7974DA599C0Fac7#code) ([diff](https://disco.l2beat.com/diff/oeth:0xb528D11cC114E026F138fE568744c6D45ce6Da7A/oeth:0xa919894851548179A0750865e7974DA599C0Fac7)) - 2024-03-14 00:00 UTC, deployment of [GasPriceOracle](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000000F#code): transaction [0xedbfdad1f44ea830b863eac45eca4408398351b30511826012882059625963d2](https://optimistic.etherscan.io/tx/0xedbfdad1f44ea830b863eac45eca4408398351b30511826012882059625963d2), implementations: [0xb528D11cC114E026F138fE568744c6D45ce6Da7A](https://optimistic.etherscan.io/address/0xb528D11cC114E026F138fE568744c6D45ce6Da7A#code) Provides the current gas price for L2 transactions. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L2StandardBridge Addresses: [0x4200000000000000000000000000000000000010](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010#code), [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://optimistic.etherscan.io/address/0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [L2StandardBridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2StandardBridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://optimistic.etherscan.io/address/0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1#code) The L2StandardBridge contract is the main entry point to deposit or withdraw ERC20 tokens from L2 to L1. This contract can store any token. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### SequencerFeeVault Addresses: [0x4200000000000000000000000000000000000011](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011#code), [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://optimistic.etherscan.io/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [SequencerFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [SequencerFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://optimistic.etherscan.io/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) Collects the sequencer fees, which are withdrawable to the FeesCollector on L1. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### OptimismMintableERC20Factory Addresses: [0x4200000000000000000000000000000000000012](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012#code), [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://optimistic.etherscan.io/address/0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC20Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC20Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://optimistic.etherscan.io/address/0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9#code) A helper contract that generates OptimismMintableERC20 contracts on the network it's deployed to. OptimismMintableERC20 is a standard extension of the base ERC20 token contract designed to allow the L1StandardBridge contracts to mint and burn tokens. This makes it possible to use an OptimismMintableERC20 as this chain's representation of a token on the host chain, or vice-versa. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L1BlockNumber Addresses: [0x4200000000000000000000000000000000000013](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000013#code), [0xC0D3C0d3C0D3c0D3C0d3c0D3C0d3c0d3C0d30013](https://optimistic.etherscan.io/address/0xC0D3C0d3C0D3c0D3C0d3c0D3C0d3c0d3C0d30013#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) Simple contract that returns the latest L1 block number. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L2ERC721Bridge Addresses: [0x4200000000000000000000000000000000000014](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code), [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://optimistic.etherscan.io/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 2, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1y 4mo) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://optimistic.etherscan.io/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#code) ([diff](https://disco.l2beat.com/diff/oeth:0x5a7749f83b81B301cAb5f48EB8516B986DAef23D/oeth:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833)) - 2022-10-04 21:36 UTC, deployment of [L2ERC721Bridge](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000014#code): transaction [0x02985bade8b066202067f455d11aa0996a23c022fcd923e113af5d9997ddb5ce](https://optimistic.etherscan.io/tx/0x02985bade8b066202067f455d11aa0996a23c022fcd923e113af5d9997ddb5ce), implementations: [0x5a7749f83b81B301cAb5f48EB8516B986DAef23D](https://optimistic.etherscan.io/address/0x5a7749f83b81B301cAb5f48EB8516B986DAef23D#code) The L2ERC721Bridge contract is the main entry point to deposit or withdraw ERC721 tokens from L2 to L1. This contract can store any token. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L1Block Addresses: [0x4200000000000000000000000000000000000015](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code), [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://optimistic.etherscan.io/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 3mo 28d ago, Avg upgrade interval: 8mo 1d) - 2026-07-08 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://optimistic.etherscan.io/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) ([diff](https://disco.l2beat.com/diff/oeth:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/oeth:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56)) - 2025-12-02 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a](https://optimistic.etherscan.io/tx/0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a), implementations: [0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C](https://optimistic.etherscan.io/address/0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C#code) ([diff](https://disco.l2beat.com/diff/oeth:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12/oeth:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C)) - 2025-05-09 16:00 UTC, upgrade of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd](https://optimistic.etherscan.io/tx/0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd), implementations: [0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12](https://optimistic.etherscan.io/address/0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12#code) ([diff](https://disco.l2beat.com/diff/oeth:0x07dbe8500fc591d1852B76feE44d5a05e13097Ff/oeth:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12)) - 2024-03-14 00:00 UTC, deployment of [L1Block](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000015#code): transaction [0x9f2b2d34dfa2cb55cceb9860cade0cb03cfbd7ff1dd07d48b4708b29a46b4a24](https://optimistic.etherscan.io/tx/0x9f2b2d34dfa2cb55cceb9860cade0cb03cfbd7ff1dd07d48b4708b29a46b4a24), implementations: [0x07dbe8500fc591d1852B76feE44d5a05e13097Ff](https://optimistic.etherscan.io/address/0x07dbe8500fc591d1852B76feE44d5a05e13097Ff#code) Simple contract that returns information about the latest L1 block, which is derived permissionlessly from the L1 chain. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L2ToL1MessagePasser Addresses: [0x4200000000000000000000000000000000000016](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000016#code), [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://optimistic.etherscan.io/address/0x27E51B2254433A3284D9ba73Ea551C397DB2a124#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: No upgrades, Last upgrade: N/A, Avg upgrade interval: N/A) - 2026-07-08 16:00 UTC, deployment of [L2ToL1MessagePasser](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000016#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://optimistic.etherscan.io/address/0x27E51B2254433A3284D9ba73Ea551C397DB2a124#code) Contract used internally by the L2CrossDomainMessenger to send messages to L1, including withdrawals. It can also be used directly as a low-level interface. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### OptimismMintableERC721Factory Addresses: [0x4200000000000000000000000000000000000017](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000017#code), [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://optimistic.etherscan.io/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC721Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf43862B9d814BB4504158CecCB0b74b31265e4eE/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC721Factory](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://optimistic.etherscan.io/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) Factory contract to create bridge compliant ERC721 IOU token representations of bridged L1 ERC721 tokens. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L2ProxyAdmin Addresses: [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code), [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://optimistic.etherscan.io/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [L2ProxyAdmin](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code): transaction [0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c](https://optimistic.etherscan.io/tx/0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://optimistic.etherscan.io/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) ([diff](https://disco.l2beat.com/diff/oeth:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F/oeth:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F)) - 2026-07-08 16:00 UTC, deployment of [L2ProxyAdmin](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://optimistic.etherscan.io/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) Administration contract for the L2 predeploy proxies. Adds upgradePredeploys(address), which can only be called by the system depositor account and delegatecalls an L2ContractsManager to upgrade every predeploy in a single network upgrade transaction. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner - **owner**: SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### BaseFeeVault Addresses: [0x4200000000000000000000000000000000000019](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000019#code), [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [BaseFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [BaseFeeVault](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) Collects EIP-1559 base fees, which are withdrawable to the FeesCollector on L1. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### L1FeeVault Addresses: [0x420000000000000000000000000000000000001A](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001A#code), [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1mo 29d) - 2026-07-08 16:00 UTC, upgrade of [L1FeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L1FeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://optimistic.etherscan.io/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) Collects the L1 portion of the L2 transaction fees, which are withdrawable to the FeesCollector on L1. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### OperatorFeeVault Addresses: [0x420000000000000000000000000000000000001b](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code), [0xEddf416c7159387cc6DF3015700F79Cfb8911373](https://optimistic.etherscan.io/address/0xEddf416c7159387cc6DF3015700F79Cfb8911373#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 2, Last upgrade: 3mo 28d ago, Avg upgrade interval: 6mo 1d) - 2026-07-08 16:00 UTC, upgrade of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://optimistic.etherscan.io/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/oeth:0xEddf416c7159387cc6DF3015700F79Cfb8911373/oeth:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, upgrade of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xEddf416c7159387cc6DF3015700F79Cfb8911373](https://optimistic.etherscan.io/address/0xEddf416c7159387cc6DF3015700F79Cfb8911373#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537/oeth:0xEddf416c7159387cc6DF3015700F79Cfb8911373)) - 2025-05-09 16:00 UTC, deployment of [OperatorFeeVault](https://optimistic.etherscan.io/address/0x420000000000000000000000000000000000001b#code): transaction [0xf162acc8ebbaf9237755736b62331a4817fe27bbbe3712f473ecfa8fee499f7c](https://optimistic.etherscan.io/tx/0xf162acc8ebbaf9237755736b62331a4817fe27bbbe3712f473ecfa8fee499f7c), implementations: [0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537](https://optimistic.etherscan.io/address/0x4fa2Be8cd41504037F1838BcE3bCC93bC68Ff537#code) Holds the 'operator fees' for the L2 network, which are part of the L2 fees that users pay. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### SchemaRegistry Addresses: [0x4200000000000000000000000000000000000020](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000020#code), [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://optimistic.etherscan.io/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1y 7mo) - 2026-07-08 16:00 UTC, upgrade of [SchemaRegistry](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000020#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://optimistic.etherscan.io/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) ([diff](https://disco.l2beat.com/diff/oeth:0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13/oeth:0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34)) - 2023-07-27 22:05 UTC, deployment of [SchemaRegistry](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000020#code): transaction [0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb](https://optimistic.etherscan.io/tx/0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb), implementations: [0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13](https://optimistic.etherscan.io/address/0x6232208d66bAc2305b46b4Cb6BCB3857B298DF13#code) Contracts to register schemas for the Ethereum Attestation Service (EAS). - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### EAS Addresses: [0x4200000000000000000000000000000000000021](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000021#code), [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://optimistic.etherscan.io/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 28d ago, Avg upgrade interval: 1y 7mo) - 2026-07-08 16:00 UTC, upgrade of [EAS](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000021#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://optimistic.etherscan.io/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://optimistic.etherscan.io/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) ([diff](https://disco.l2beat.com/diff/oeth:0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088/oeth:0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6)) - 2023-07-27 22:05 UTC, deployment of [EAS](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000021#code): transaction [0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb](https://optimistic.etherscan.io/tx/0xe09a2d85965656572055111f1968491e9bb6b174bfaa5b3e38dbbb82ef94e6fb), implementations: [0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088](https://optimistic.etherscan.io/address/0x4E0275Ea5a89e7a3c1B58411379D1a0eDdc5b088#code) Contract containing the main logic for the Ethereum Attestation Service (EAS). - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay #### OPToken Addresses: [0x4200000000000000000000000000000000000042](https://optimistic.etherscan.io/address/0x4200000000000000000000000000000000000042#code) The OP token contract. The minting policy is controlled by the MintManager. - Roles: - **owner**: MintManager The current deployment carries some associated risks: - Funds can be stolen if a contract receives a malicious code upgrade. Both regular and emergency upgrades must be approved by both the Security Council and the Foundation. There is no delay on regular upgrades. ### Program Hashes #### OP Kona interop absolute prestate v1.7.0-rc.2 (cannon64-kona-interop) A commitment to the initial state of the OP stack fault proof program of Kona client, in the interop variant run by the super fault dispute game (respected game type 9). - Hash: `0x031ac6f15c19010da258f5cb633ef6ca9318c2d0f244bea6b2045ce6b790e1df` - Repository: https://github.com/ethereum-optimism/optimism/tree/kona-client/v1.7.0-rc.2/rust/kona - Verification: successful - Used in: [OP Mainnet](https://ethbeat.org/layer2s/projects/op-mainnet), [Ink](https://ethbeat.org/layer2s/projects/ink), [Unichain](https://ethbeat.org/layer2s/projects/unichain) ##### Verification steps 1. Install [just](https://just.systems). 2. Install docker [https://docs.docker.com/get-started/get-docker/](https://docs.docker.com/get-started/get-docker/) and make sure it is running. 3. Check out the correct commit of the [optimism](https://github.com/ethereum-optimism/optimism) repo (tag `kona-client/v1.7.0-rc.2`): `git checkout 64b043ea5bbca9bc6e57e0f1c8df0404b4cf5f68`. 4. From the monorepo root run `just reproducible-prestate`. A single docker build produces both variants and prints their hashes; this prestate is the `kona-client-int` (interop) one.