# Unichain Markdown version of https://l2beat.com/layer2s/projects/unichain ## Summary - Total Value Secured: $87.43 M (-6.59% compared to seven days ago; canonically bridged $42.03 M, natively minted $0.00, externally bridged $45.39 M; 51.9% 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 $40.03 M (45.7%), Stablecoins $27.91 M (31.9%), BTC & derivatives $7.76 M (8.87%), Other $11.72 M (13.4%), Public RWAs $27.39 (0.00%) - Associated tokens: UNI: $1.64 M (1.87% of TVS) - Past day UOPS: 7.97 (+3.33% compared to seven days ago) - Stage: Stage 1 - Gas token: ETH - Type: Optimistic Rollup - Purposes: Universal, Exchange - Host chain: Ethereum - Chain ID: 130 - Last 24h cross-chain volume: $3.04 M - Last 24h cross-chain transfers: 581 - Interop protocols used (last 24h volume): [CCTP v2](https://l2beat.com/interop/protocols/cctpv2) ($1.34 M), [Across](https://l2beat.com/interop/protocols/across) ($1.12 M), [LayerZero](https://l2beat.com/interop/protocols/layerzero) ($275.95 K), and 10 more - Tokens by volume (last 24h): [USDC](https://l2beat.com/interop/tokens/9HN5PN/usdc) ($1.99 M), [ETH](https://l2beat.com/interop/tokens/C0Hmkq/eth) ($402.64 K), [WBTC](https://l2beat.com/interop/tokens/VfIedD/wbtc) ($232.91 K), and 10 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 Unichain is a faster, cheaper L2 designed to be the home for DeFi and the home for multichain liquidity. ### Links - Website: https://unichain.org/ - Bridge: https://unichain.org/bridge - Docs: https://docs.unichain.org/docs - Explorer: https://uniscan.xyz/, https://unichain.blockscout.com/ - Social: https://x.com/unichain, https://discord.com/invite/uniswap - Other: https://growthepie.com/chains/unichain - Contracts explorer (Disco): https://disco.l2beat.com/ui/p/unichain ### 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 ## Value Secured The interactive TVS charts are shown on [the HTML page](https://l2beat.com/layer2s/projects/unichain#tvs). Token by token: [TVS breakdown](https://l2beat.com/layer2s/projects/unichain/tvs-breakdown). - [TVS chart (JSON)](https://l2beat.com/api/scaling/tvs/unichain) - [TVS breakdown by token (JSON)](https://l2beat.com/api/scaling/tvs/unichain/breakdown) ## Volume and flows The interactive flows chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/unichain#interop-flows). ## Activity The interactive activity chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/unichain#activity). - [Activity chart (JSON)](https://l2beat.com/api/scaling/activity/unichain) ## Onchain costs The section shows the operating costs that L2s pay to Ethereum. The interactive costs chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/unichain#onchain-costs). ### Tracked transactions #### Batch submissions - transfer: 2024-11-04 19:25 UTC - now; currently used; from: [0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd](https://etherscan.io/address/0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd); to: [0xFf00000000000000000000000000000000000130](https://etherscan.io/address/0xFf00000000000000000000000000000000000130) #### State updates - functionCall: 2024-11-04 19:25 UTC - now; currently used; address: [0x2F12d621a16e2d3285929C9996f478508951dFe4](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4); 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 its data-availability (DA) layer over time. The project currently posts data to [Ethereum](https://l2beat.com/data-availability/projects/ethereum/ethereum). The interactive data posted chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/unichain#data-posted). ### Tracked transactions #### Blob submissions - DA layer Ethereum: from block 21116363 to now; currently used; inbox: [0xFf00000000000000000000000000000000000130](https://etherscan.io/address/0xFf00000000000000000000000000000000000130); sequencers: [0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd](https://etherscan.io/address/0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd) ## 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://l2beat.com/layer2s/projects/unichain#liveness). ### Tracked transactions #### Batch submissions - transfer: 2024-11-04 19:25 UTC - now; currently used; from: [0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd](https://etherscan.io/address/0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd); to: [0xFf00000000000000000000000000000000000130](https://etherscan.io/address/0xFf00000000000000000000000000000000000130) #### State updates - functionCall: 2024-11-04 19:25 UTC - now; currently used; address: [0x2F12d621a16e2d3285929C9996f478508951dFe4](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4); selector: 0x82ecf2f6; signature: `function create(uint32 _gameType, bytes32 _rootClaim, bytes _extraData) payable returns (address proxy_)` ## Milestones & Incidents - 2025-12-27: [UNIfication proposal executed](https://www.tally.xyz/gov/uniswap/proposal/93). Uniswap governance enabled protocol fees, burned 100M UNI, and routed Unichain fees to UNI burn. - 2025-08-14: [Unichain flashblocks are live](https://blog.uniswap.org/flashblocks-are-live). Unichain hits 200ms sub-blocks inside Trusted Execution Environments. - 2025-05-01: [TEE-based block building & fair ordering](https://blog.uniswap.org/rollup-boost-is-live-on-unichain). Unichain implements block building in TEE with MEV protection and fair ordering. - 2025-02-12: [Mainnet Launch](https://x.com/unichain/status/1889313993296064770). ## 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 Unichain 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 L2BEAT 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://l2beat.com/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/0xFf00000000000000000000000000000000000130#code) - [OptimismPortal2.sol - source code, depositTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) Learn more about the DA layer here: [Ethereum](https://l2beat.com/data-availability/projects/ethereum/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/unichain.toml). ### Compression scheme Data batches are compressed using the [zlib](https://github.com/madler/zlib) algorithm with best compression level. ### Genesis state The genesis file can be found [here](https://github.com/ethereum-optimism/superchain-registry/blob/main/superchain/extra/genesis/mainnet/unichain.json.zst). ### 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://l2beat.com/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://l2beat.com/layer2s/projects/op-mainnet), [Ink](https://l2beat.com/layer2s/projects/ink), [Unichain](https://l2beat.com/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 ### 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: 93 - Last upgrade: 14d 21h ago - Avg upgrade interval: 2mo 10d - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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/0x2F12d621a16e2d3285929C9996f478508951dFe4#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/0x2F12d621a16e2d3285929C9996f478508951dFe4#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 [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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 [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/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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 [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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 [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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 [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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 [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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://uniscan.xyz/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2CrossDomainMessenger](https://uniscan.xyz/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://uniscan.xyz/address/0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96#code) - 2026-07-08 16:00 UTC, upgrade of [GasPriceOracle](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://uniscan.xyz/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) ([diff](https://disco.l2beat.com/diff/unichain:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/unichain:0x547d0fba434877D7237d511cF87FABe2ee26b152)) - 2026-07-08 16:00 UTC, upgrade of [L2StandardBridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2StandardBridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://uniscan.xyz/address/0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1#code) - 2026-07-08 16:00 UTC, upgrade of [SequencerFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [SequencerFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://uniscan.xyz/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC20Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC20Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://uniscan.xyz/address/0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9#code) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2ERC721Bridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://uniscan.xyz/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#code) - 2026-07-08 16:00 UTC, upgrade of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://uniscan.xyz/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) ([diff](https://disco.l2beat.com/diff/unichain:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/unichain:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56)) - 2026-07-08 16:00 UTC, deployment of [L2ToL1MessagePasser](https://uniscan.xyz/address/0x4200000000000000000000000000000000000016#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://uniscan.xyz/address/0x27E51B2254433A3284D9ba73Ea551C397DB2a124#code) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC721Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf43862B9d814BB4504158CecCB0b74b31265e4eE/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC721Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://uniscan.xyz/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) - 2026-07-08 16:00 UTC, upgrade of [L2ProxyAdmin](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code): transaction [0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c](https://uniscan.xyz/tx/0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://uniscan.xyz/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) ([diff](https://disco.l2beat.com/diff/unichain:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F/unichain:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F)) - 2026-07-08 16:00 UTC, deployment of [L2ProxyAdmin](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://uniscan.xyz/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) - 2026-07-08 16:00 UTC, upgrade of [BaseFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [BaseFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) - 2026-07-08 16:00 UTC, upgrade of [L1FeeVault](https://uniscan.xyz/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L1FeeVault](https://uniscan.xyz/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) - 2026-07-08 16:00 UTC, deployment of [SchemaRegistry](https://uniscan.xyz/address/0x4200000000000000000000000000000000000020#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://uniscan.xyz/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) - 2026-07-08 16:00 UTC, deployment of [EAS](https://uniscan.xyz/address/0x4200000000000000000000000000000000000021#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://uniscan.xyz/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) - 2026-07-06 18:32 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2](https://etherscan.io/address/0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2)) - 2026-07-06 18:32 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-07-06 18:32 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x42Ad0173051225Ac784100e9acD43349707F4db9](https://etherscan.io/address/0x42Ad0173051225Ac784100e9acD43349707F4db9#code) ([diff](https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9)) - 2026-07-06 18:32 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-07-06 18:32 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-07-06 18:32 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2026-07-06 18:32 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-07-06 18:32 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) - 2026-07-06 18:32 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 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)) - 2026-02-10 17:30 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B](https://etherscan.io/address/0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B#code) ([diff](https://disco.l2beat.com/diff/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B)) - 2026-02-10 17:30 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c](https://etherscan.io/address/0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c#code) ([diff](https://disco.l2beat.com/diff/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c)) - 2026-02-10 17:30 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xd392c27B84b1cA776528F2704BC67B82a62132d2](https://etherscan.io/address/0xd392c27B84b1cA776528F2704BC67B82a62132d2#code) ([diff](https://disco.l2beat.com/diff/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2)) - 2026-02-10 17:30 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2026-02-10 17:30 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2026-02-10 17:30 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5](https://etherscan.io/address/0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5)) - 2026-02-10 17:30 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), 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://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9](https://uniscan.xyz/tx/0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9), implementations: [0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1](https://uniscan.xyz/address/0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1#code) ([diff](https://disco.l2beat.com/diff/unichain:0x93e57A196454CB919193fa9946f14943cf733845/unichain:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1)) - 2025-12-02 16:00 UTC, upgrade of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a](https://uniscan.xyz/tx/0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a), implementations: [0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C](https://uniscan.xyz/address/0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C#code) ([diff](https://disco.l2beat.com/diff/unichain:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12/unichain:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C)) - 2025-11-25 21:35 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x7Cf803296662e8C72A6C1d6450572209aCF7f202](https://etherscan.io/address/0x7Cf803296662e8C72A6C1d6450572209aCF7f202#code) ([diff](https://disco.l2beat.com/diff/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202)) - 2025-11-25 21:35 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x74Fac1D45B98bae058F8F566201c9A81B85C7D50](https://etherscan.io/address/0x74Fac1D45B98bae058F8F566201c9A81B85C7D50#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50)) - 2025-11-25 21:35 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED](https://etherscan.io/address/0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED#code) ([diff](https://disco.l2beat.com/diff/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED)) - 2025-11-25 21:35 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-11-25 21:35 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x7f1d12fB2911EB095278085f721e644C1f675696/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-11-25 21:35 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x5493f4677A186f64805fe7317D6993ba4863988F/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 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)) - 2025-10-02 20:45 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x381E729FF983FA4BCEd820e7b922d79bF653B999](https://etherscan.io/address/0x381E729FF983FA4BCEd820e7b922d79bF653B999#code) ([diff](https://disco.l2beat.com/diff/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999)) - 2025-10-02 20:45 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-10-02 20:45 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557](https://etherscan.io/address/0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557#code) ([diff](https://disco.l2beat.com/diff/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557)) - 2025-10-02 20:45 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x22D12E0FAebD62d429514A65EBAe32dd316c12D6](https://etherscan.io/address/0x22D12E0FAebD62d429514A65EBAe32dd316c12D6#code) ([diff](https://disco.l2beat.com/diff/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6)) - 2025-10-02 20:45 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x7f1d12fB2911EB095278085f721e644C1f675696](https://etherscan.io/address/0x7f1d12fB2911EB095278085f721e644C1f675696#code) ([diff](https://disco.l2beat.com/diff/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F/eth:0x7f1d12fB2911EB095278085f721e644C1f675696)) - 2025-10-02 20:45 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E)) - 2025-07-24 18:12 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a](https://etherscan.io/address/0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a#code) ([diff](https://disco.l2beat.com/diff/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a)) - 2025-07-24 18:12 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-07-24 18:12 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa](https://etherscan.io/address/0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa#code) ([diff](https://disco.l2beat.com/diff/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa)) - 2025-07-24 18:12 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54](https://etherscan.io/address/0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54#code) ([diff](https://disco.l2beat.com/diff/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54)) - 2025-07-24 18:12 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F](https://etherscan.io/address/0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F#code) ([diff](https://disco.l2beat.com/diff/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F)) - 2025-07-24 18:12 UTC, deployment of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x784d2F03593A42A6E4676A012762F18775ecbBe6](https://etherscan.io/address/0x784d2F03593A42A6E4676A012762F18775ecbBe6#code) - 2025-07-24 18:12 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) - 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)) - 2025-05-09 16:00 UTC, deployment of [GasPriceOracle](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30](https://uniscan.xyz/tx/0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30), implementations: [0x93e57A196454CB919193fa9946f14943cf733845](https://uniscan.xyz/address/0x93e57A196454CB919193fa9946f14943cf733845#code) - 2025-05-09 16:00 UTC, deployment of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd](https://uniscan.xyz/tx/0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd), implementations: [0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12](https://uniscan.xyz/address/0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12#code) - 2025-04-25 01:12 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0xB443Da3e07052204A02d630a8933dAc05a0d6fB4](https://etherscan.io/address/0xB443Da3e07052204A02d630a8933dAc05a0d6fB4#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4)) - 2025-04-25 01:12 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x340f923E5c7cbB2171146f64169EC9d5a9FfE647](https://etherscan.io/address/0x340f923E5c7cbB2171146f64169EC9d5a9FfE647#code) ([diff](https://disco.l2beat.com/diff/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647)) - 2025-04-25 01:12 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x5D5a095665886119693F0B41d8DFeE78da033e8B](https://etherscan.io/address/0x5D5a095665886119693F0B41d8DFeE78da033e8B#code) ([diff](https://disco.l2beat.com/diff/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B)) - 2025-04-25 01:12 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013](https://etherscan.io/address/0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013#code) ([diff](https://disco.l2beat.com/diff/eth:0x276d3730f219f7ec22274f7263180b8452B46d47/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013)) - 2025-04-12 19:18 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd](https://etherscan.io/address/0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd#code) ([diff](https://disco.l2beat.com/diff/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd)) - 2025-04-12 19:18 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x4bbA758F006Ef09402eF31724203F316ab74e4a0](https://etherscan.io/address/0x4bbA758F006Ef09402eF31724203F316ab74e4a0#code) ([diff](https://disco.l2beat.com/diff/eth:0xc641A33cab81C559F2bd4b21EA34C290E2440C2B/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0)) - 2025-04-12 19:18 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x760C48C62A85045A6B69f07F4a9f22868659CbCc](https://etherscan.io/address/0x760C48C62A85045A6B69f07F4a9f22868659CbCc#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc)) - 2025-04-12 19:18 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231](https://etherscan.io/address/0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231#code) ([diff](https://disco.l2beat.com/diff/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231)) - 2025-04-12 19:18 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x276d3730f219f7ec22274f7263180b8452B46d47](https://etherscan.io/address/0x276d3730f219f7ec22274f7263180b8452B46d47#code) ([diff](https://disco.l2beat.com/diff/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d/eth:0x276d3730f219f7ec22274f7263180b8452B46d47)) - 2025-04-12 19:18 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x5493f4677A186f64805fe7317D6993ba4863988F](https://etherscan.io/address/0x5493f4677A186f64805fe7317D6993ba4863988F#code) ([diff](https://disco.l2beat.com/diff/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846/eth:0x5493f4677A186f64805fe7317D6993ba4863988F)) - 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)) - 2025-03-19 15:24 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16](https://etherscan.io/tx/0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2025-03-19 15:24 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16](https://etherscan.io/tx/0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16), implementations: [0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375](https://etherscan.io/address/0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375#code) ([diff](https://disco.l2beat.com/diff/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375)) - 2025-02-14 07:53 UTC, deployment of [L1ERC20TokenBridge](https://etherscan.io/address/0x755610f5Be536Ad7afBAa7c10F3E938Ea3aa1877#code): transaction [0x09f1292f517ff6453a28592ca3def9cfcc55d8738877af3b9830f0c457009c02](https://etherscan.io/tx/0x09f1292f517ff6453a28592ca3def9cfcc55d8738877af3b9830f0c457009c02), implementations: [0x6078232C54d956c901620fa4590e0F7E37c2B82f](https://etherscan.io/address/0x6078232C54d956c901620fa4590e0F7E37c2B82f#code) - 2024-11-04 19:27 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x742808a336fb214d362e781aae88a3f818ba00a363900e7ca1915f0996b2060a](https://etherscan.io/tx/0x742808a336fb214d362e781aae88a3f818ba00a363900e7ca1915f0996b2060a), implementations: [0xc641A33cab81C559F2bd4b21EA34C290E2440C2B](https://etherscan.io/address/0xc641A33cab81C559F2bd4b21EA34C290E2440C2B#code) - 2024-11-04 19:27 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x9efd53c7ecef0094ea6cd3a05d346daaee4a6c71c0dc69758bcdbac26b9ca9ef](https://etherscan.io/tx/0x9efd53c7ecef0094ea6cd3a05d346daaee4a6c71c0dc69758bcdbac26b9ca9ef), implementations: [0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65](https://etherscan.io/address/0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65#code) - 2024-11-04 19:26 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x14bd9cb3f3d081f9b569dfeccac4821a21e4fe65b0c1a1b1b80f0369cca63695](https://etherscan.io/tx/0x14bd9cb3f3d081f9b569dfeccac4821a21e4fe65b0c1a1b1b80f0369cca63695), implementations: [0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846](https://etherscan.io/address/0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846#code) - 2024-11-04 19:26 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb432a9b2f5b368a884c3a0d0708bf6949d38d8102b35bba9fa4d21c12865e601](https://etherscan.io/tx/0xb432a9b2f5b368a884c3a0d0708bf6949d38d8102b35bba9fa4d21c12865e601), implementations: [0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d](https://etherscan.io/address/0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d#code) - 2024-11-04 19:25 UTC, deployment of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb9a9cca69cc08ba53aeb94e99695bbaec8c54a6431b258d2bca5d73a51663df9](https://etherscan.io/tx/0xb9a9cca69cc08ba53aeb94e99695bbaec8c54a6431b258d2bca5d73a51663df9), implementations: [0xF56D96B2535B932656d3c04Ebf51baBff241D886](https://etherscan.io/address/0xF56D96B2535B932656d3c04Ebf51baBff241D886#code) - 2024-11-04 19:25 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x1623e586faeda506c832de15a948fd9c9d34da18c0ed5bbfc095dc1c0621f936](https://etherscan.io/tx/0x1623e586faeda506c832de15a948fd9c9d34da18c0ed5bbfc095dc1c0621f936), implementations: [0xe2F826324b2faf99E513D16D266c3F80aE87832B](https://etherscan.io/address/0xe2F826324b2faf99E513D16D266c3F80aE87832B#code) - 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) ## Ossification & Updates Each date links the update on the HTML page, which also shows its contract diffs. ### [2026-10-01 13:46 UTC](https://l2beat.com/layer2s/projects/unichain?update=cd925ce0) (high severity, 413 changes) OP Contracts Upgrade 19b "Karst" (op-contracts/v7.0.0) on 2026-07-06 upgraded the L1 contracts to their v7 implementations. The Karst L2 hardfork activated on 2026-07-08 16:00:01 UTC. Every L2 predeploy was upgraded, and most now inherit `ProxyAdminOwnedBase`, which gates privileged functions to the proxy's ProxyAdmin or its owner. OP Contracts Upgrade 20 (op-contracts/v8.0.0-rc.3) followed on 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 22024228 to 1788848651. 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 0 → 9, CANNON 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, defines only a proposer and has no challenger. The chain moved onto the shared Superchain MIPS, PreimageOracle and DelayedWETH instances, replacing its own, and the two previous DelayedWETH contracts were replaced by one. SystemConfig reached v4.0.0, removing the `batchInbox()` getter; the batch inbox address now lives only in the rollup config. The ProxyAdmin owner moved from the UnichainProxyAdminOwner to the SuperchainProxyAdminOwner, on L1 and through its L2 alias. The Unichain-specific owner Safe, its LivenessModule and LivenessGuard are no longer part of the permission graph. Version changes and implementation diffs: - FaultDisputeGame -> SuperFaultDisputeGame (type 0 -> 9): https://disco.l2beat.com/diff/eth:0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499/eth:0x19AF533Cc2A2A55786DCB8672aA5717e64213208 - PermissionedDisputeGame -> SuperPermissionedDisputeGame (type 1 -> 5): https://disco.l2beat.com/diff/eth:0x58bf355C5d4EdFc723eF89d99582ECCfd143266A/eth:0x5C3eb47cB0174aea522a2a9Ae79487139A53D691 - ETHLockbox 1.2.0 -> 1.3.1: https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad - OptimismPortal2 5.2.0 -> 5.8.0: https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0x1005217ad392DC64CEf501FA1777A27D42166748 - AnchorStateRegistry 3.7.0 -> 3.9.0: https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281 - DisputeGameFactory 1.4.0 -> 1.6.1: https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b - L1StandardBridge 2.8.0 -> 2.8.2: https://disco.l2beat.com/diff/eth:0x61525EaaCDdB97D9184aFc205827E6A4fd0Bf62A/eth:0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891 - SuperchainConfig 2.4.2 -> 2.4.3: https://disco.l2beat.com/diff/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550/eth:0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504 - L1CrossDomainMessenger 2.11.0 -> 2.11.1: https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0 - OptimismMintableERC20Factory 1.10.2 -> 1.11.0: https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12 - SystemConfig 3.13.1 -> 4.0.0: https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA - L1ERC721Bridge 2.9.0 -> 2.9.1: https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e - L2CrossDomainMessenger 2.1.1-beta.1 -> 2.2.1: https://disco.l2beat.com/diff/unichain:0xC0d3c0d3c0D3c0D3C0d3C0D3C0D3c0d3c0d30007/unichain:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96 - GasPriceOracle implementation rotated: https://disco.l2beat.com/diff/unichain:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/unichain:0x547d0fba434877D7237d511cF87FABe2ee26b152 - L2StandardBridge 1.11.1-beta.1 -> 1.13.2: https://disco.l2beat.com/diff/unichain:0xC0d3c0d3c0D3c0d3C0D3c0D3C0d3C0D3C0D30010/unichain:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1 - SequencerFeeVault 1.5.0-beta.2 -> 1.6.1: https://disco.l2beat.com/diff/unichain:0xC0D3C0d3c0d3c0d3C0D3c0d3C0D3c0d3c0D30011/unichain:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA - OptimismMintableERC20Factory 1.10.1-beta.2 -> 1.11.0: https://disco.l2beat.com/diff/unichain:0xc0D3c0d3C0d3c0d3c0D3c0d3c0D3c0D3c0D30012/unichain:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9 - L2ERC721Bridge 1.7.1-beta.2 -> 1.10.1: https://disco.l2beat.com/diff/unichain:0xC0D3c0d3c0d3c0d3c0D3C0d3C0D3C0D3c0d30014/unichain:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833 - L1Block implementation rotated: https://disco.l2beat.com/diff/unichain:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/unichain:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56 - L2ToL1MessagePasser 1.1.1-beta.1 -> 1.2.0: https://disco.l2beat.com/diff/unichain:0xC0D3C0d3C0d3c0d3C0d3C0D3c0D3c0d3c0D30016/unichain:0x27E51B2254433A3284D9ba73Ea551C397DB2a124 - OptimismMintableERC721Factory 1.4.1-beta.1 -> 1.5.1: https://disco.l2beat.com/diff/unichain:0xc0d3C0d3C0d3C0d3C0d3c0d3C0D3C0d3C0D30017/unichain:0xf43862B9d814BB4504158CecCB0b74b31265e4eE - L2ProxyAdmin implementation rotated: https://disco.l2beat.com/diff/unichain:0xC0d3C0D3c0d3C0d3c0d3c0D3C0D3C0d3C0D30018/unichain:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F - BaseFeeVault 1.5.0-beta.2 -> 1.6.1: https://disco.l2beat.com/diff/unichain:0xC0d3c0D3c0d3C0D3C0D3C0d3c0D3C0D3c0d30019/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7 - L1FeeVault 1.5.0-beta.2 -> 1.6.1: https://disco.l2beat.com/diff/unichain:0xc0D3c0D3C0d3c0d3c0d3C0d3c0d3C0d3C0D3001A/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7 - SchemaRegistry 1.3.1-beta.1 -> 1.3.1-beta.2: https://disco.l2beat.com/diff/unichain:0xc0d3c0d3c0d3C0d3c0d3C0D3C0D3c0d3C0D30020/unichain:0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34 - EAS 1.4.1-beta.1 -> 1.4.1-beta.3: https://disco.l2beat.com/diff/unichain:0xC0D3c0D3C0d3c0D3c0D3C0D3c0D3c0d3c0d30021/unichain:0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6 ### [2026-07-06 07:56 UTC](https://l2beat.com/layer2s/projects/unichain?update=9e0b5854) (high severity, 8 changes) Shared SuperchainConfig upgraded 2.4.0 → 2.4.2 ([diff](https://disco.l2beat.com/diff/eth:0xb08Cc720F511062537ca78BdB0AE691F04F5a957/eth:0xE4F9779ab53070a55db24dFAeFf9AF147c6ED550)). No behavioral change — `ProxyAdminOwnedBase` import moved, misleading pause-state warning removed, and 5 new unused constants added to the shared `Constants` library (forward-plumbing for OPCM tooling). ### [2026-06-02 10:54 UTC](https://l2beat.com/layer2s/projects/unichain?update=7d37c638) (4 changes) Unichain Multisig 1 and Multisig 2 each rotated one signer. New game name (aggregateVerifier) added to portal. ### [2026-05-15 13:08 UTC](https://l2beat.com/layer2s/projects/unichain?update=c83035d4) (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 15:18 UTC](https://l2beat.com/layer2s/projects/unichain?update=f85a58de) (1 change) Optimism Security Council (`eth:0xc2819DC7...`) — member 12 swap: `0x92827223` → `0xcbC7dCeb`. Shared multisig (referenced by multiple Superchain projects). ### [2026-03-25 10:07 UTC](https://l2beat.com/layer2s/projects/unichain?update=0efbe3fa) (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://l2beat.com/layer2s/projects/unichain?update=ff91f6d8) (2 changes) Optimism Security Council: 2 members replaced. ### [2026-02-13 14:49 UTC](https://l2beat.com/layer2s/projects/unichain?update=8f84154a) (high severity, 48 changes) OP Contracts Upgrade 18 (op-contracts/v6.0.0). Same implementations as OP Mainnet. 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://l2beat.com/layer2s/projects/unichain?update=58eb42e4) (3 changes) SaferSafes module (LivenessModule + TimelockGuard) added to OpFoundationUpgradeSafe and OpFoundationOperationsSafe. Timelock delays currently 0. ### [2026-01-21 10:13 UTC](https://l2beat.com/layer2s/projects/unichain?update=9971669c) (1 change) SystemConfig minBaseFee changed from 0 to 500000 (0.0005 gwei). ### [2026-01-09 14:56 UTC](https://l2beat.com/layer2s/projects/unichain?update=c2e1f7e7) (3 changes) SystemConfig updated: gas limit doubled from 30M to 60M, and EIP-1559 parameters configured (denominator: 250, elasticity: 12). ### [2026-01-07 16:07 UTC](https://l2beat.com/layer2s/projects/unichain?update=23946144) (2 changes) L1Splitter recipient changed to a Drippie contract as part of the UNIfication proposal, routing sequencer fees to the UNI burn mechanism instead of treasury. ### [2025-12-18 08:59 UTC](https://l2beat.com/layer2s/projects/unichain?update=86db7e3e) (high severity, 14 changes) upgrade to safe 1.4.1 ### [2025-12-10 10:26 UTC](https://l2beat.com/layer2s/projects/unichain?update=756e1fb4) (high severity, 49 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) ### [2025-11-28 10:14 UTC](https://l2beat.com/layer2s/projects/unichain?update=7ac95a79) (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 ### [2025-10-27 18:09 UTC](https://l2beat.com/layer2s/projects/unichain?update=1c035776) (1 change) old rpc problem, ignore. ### [2025-10-23 12:41 UTC](https://l2beat.com/layer2s/projects/unichain?update=789b3ea9) (2 changes) msig change. ### [2025-10-03 14:34 UTC](https://l2beat.com/layer2s/projects/unichain?update=cbee75ee) (high severity, 67 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:0x4F0f6B7877A174A4fd41DF80dB80DeF8883bc772/eth:0x42891199E6abD6A346E26B7d187EF5657FDfF603 PermissionedDisputeGame (via DisputeGameFactory gameImpls[1]) - no code changes; constructor variables updated (e.g., DelayedWETH, VM). https://disco.l2beat.com/diff/eth:0xC56EF9c3F3e9fD6713055b4577AC4AF8303E63e1/eth:0x5581F65C63B8CCbBe4A06626C336531160E2D8B5 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:0xa0157F0730Dea8d1a5c358Dc1d340a05D8796C23/eth:0x0bdbEc6bd35571F97f96f3ed21822a4f2e071A3c DelayedWETH (replacement 2) - same code, same admin; only diff is totalSupply. https://disco.l2beat.com/diff/eth:0xBcEA39a1F75D7AC8004982efBA85F92A693386CB/eth:0xe62B0279f6A466C5E1676f3ea955086300Bcd0Ac ### [2025-09-29 14:56 UTC](https://l2beat.com/layer2s/projects/unichain?update=87fecbac) (4 changes) Key rotation. ### [2025-08-18 14:05 UTC](https://l2beat.com/layer2s/projects/unichain?update=db899f84) (2 changes) Security council members rotation. ### [2025-07-25 17:48 UTC](https://l2beat.com/layer2s/projects/unichain?update=ababb0b2) (high severity, 139 changes) Check optimism diffhistory for [the upgrade 16 breakdown](https://gov.optimism.io/t/upgrade-16-proposal-interop-contracts-stage-1-and-go-1-23-support-in-cannon/10037). ### [2025-07-14 12:47 UTC](https://l2beat.com/layer2s/projects/unichain?update=cb63c74f) (20 changes) Discovery rerun on the same block number with only config-related changes. ### [2025-07-14 12:47 UTC](https://l2beat.com/layer2s/projects/unichain?update=e835b630) (36 changes) Discovery rerun on the same block number with only config-related changes. ### [2025-06-06 12:27 UTC](https://l2beat.com/layer2s/projects/unichain?update=2ec4fb61) (1 change) config: silent maker/sky escrow template added. ### [2025-05-30 07:18 UTC](https://l2beat.com/layer2s/projects/unichain?update=8ad4a96b) (10 changes) config: change comment about eip1559 fee val ### [2025-05-12 08:22 UTC](https://l2beat.com/layer2s/projects/unichain?update=e62062ce) (high severity, 11 changes) Isthmus L2 contract upgrades, mainly focusing on support for the new operator fee (standard contracts). ### [2025-05-08 10:05 UTC](https://l2beat.com/layer2s/projects/unichain?update=2a2d7a74) (10 changes) OP stack DeputyPauser upgrade (see op mainnet for more info). ### [2025-04-25 13:15 UTC](https://l2beat.com/layer2s/projects/unichain?update=290b6c6d) (high severity, 55 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 ### [2025-04-14 07:27 UTC](https://l2beat.com/layer2s/projects/unichain?update=f5d3d3f4) (high severity, 90 changes) Upgrade to 1.4.0-unichain with known contracts. Add wstETH in canonical custom escrow. ### [2025-04-04 09:41 UTC](https://l2beat.com/layer2s/projects/unichain?update=394f53c5) (high severity, 5 changes) Discovery rerun on the same block number with only config-related changes. ### [2025-03-21 10:29 UTC](https://l2beat.com/layer2s/projects/unichain?update=e9affcfd) (high severity, 14 changes) Standard SystemConfig upgrade to v2.3.0. ### [2025-02-27 13:53 UTC](https://l2beat.com/layer2s/projects/unichain?update=0a877b4a) (6 changes) Config related: Add L2 contracts as templates with source. ### [2025-02-11 14:21 UTC](https://l2beat.com/layer2s/projects/unichain?update=0715ce32) (20 changes) Initial discovery. ### [2025-02-11 10:58 UTC](https://l2beat.com/layer2s/projects/unichain?update=c3d3f314) (33 changes) Initial discovery. ## 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) ## 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, L2BEAT's contract explorer: https://disco.l2beat.com/ui/p/unichain ### Ethereum #### Actors ##### SuperchainProxyAdminOwner Addresses: [0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A](https://etherscan.io/address/0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A) A Multisig with 2/2 threshold. - Can upgrade **with no delay** - ETHLockbox [via: ProxyAdmin] - OptimismPortal2 [via: ProxyAdmin] - AnchorStateRegistry [via: ProxyAdmin] - DisputeGameFactory [via: ProxyAdmin] - DelayedWETH [via: ProxyAdmin] - L1StandardBridge [via: ProxyAdmin] - SuperchainConfig [via: SuperchainProxyAdmin] - L1CrossDomainMessenger [via: ProxyAdmin] - OptimismMintableERC20Factory [via: ProxyAdmin] - SystemConfig [via: ProxyAdmin] - L1ERC721Bridge [via: ProxyAdmin] - Can interact with DisputeGameFactory - set the dispute game implementation and initial bond for any game type - Can interact with AddressManager - set and change address mappings [via: ProxyAdmin] - Can interact with AddressManager - set and change address mappings [via: SuperchainProxyAdmin] Participants (2): [0x847B5c174615B1B7fDF770882256e2D3E95b9D92](https://l2beat.com/layer2s/projects/unichain#OpFoundationUpgradeSafe) (OpFoundationUpgradeSafe), [0xc2819DC788505Aac350142A7A707BF9D03E3Bd03](https://l2beat.com/layer2s/projects/unichain#Optimism Security Council) (Optimism Security Council) Used in: [Celo](https://l2beat.com/layer2s/projects/celo#SuperchainProxyAdminOwner), [Cyber](https://l2beat.com/layer2s/projects/cyber#SuperchainProxyAdminOwner), [Funki](https://l2beat.com/layer2s/projects/funki#SuperchainProxyAdminOwner), [Ink](https://l2beat.com/layer2s/projects/ink#SuperchainProxyAdminOwner), [Lisk](https://l2beat.com/layer2s/projects/lisk#SuperchainProxyAdminOwner), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SuperchainProxyAdminOwner), [Settlus](https://l2beat.com/layer2s/projects/settlus#SuperchainProxyAdminOwner), [Shape](https://l2beat.com/layer2s/projects/shape#SuperchainProxyAdminOwner), [Soneium](https://l2beat.com/layer2s/projects/soneium#SuperchainProxyAdminOwner), [World Chain](https://l2beat.com/layer2s/projects/world#SuperchainProxyAdminOwner) ##### Unichain Multisig 2 Addresses: [0x9245d5D10AA8a842B31530De71EA86c0760Ca1b1](https://etherscan.io/address/0x9245d5D10AA8a842B31530De71EA86c0760Ca1b1) A Multisig with 3/5 threshold. - Can interact with SystemConfig - it can update the preconfer address, the batch submitter (Sequencer) address and the gas configuration of the system Participants (5): [0x5b5B0669De777AF0Eb7A73eD46AaEe9711ab01E4](https://etherscan.io/address/0x5b5B0669De777AF0Eb7A73eD46AaEe9711ab01E4), [0xc531e0368dc3928E11987D096558dEE7A22ECEE4](https://etherscan.io/address/0xc531e0368dc3928E11987D096558dEE7A22ECEE4), [0x7D742aD88c6cE2D3dD1B4582b5180423b74cBc4c](https://etherscan.io/address/0x7D742aD88c6cE2D3dD1B4582b5180423b74cBc4c), [0x01Bc161F133d37Ed8624f77e1DCF1671b9423c92](https://etherscan.io/address/0x01Bc161F133d37Ed8624f77e1DCF1671b9423c92), [0x34d19AC0a7B195359354DB4D5E8aDa7A1f2Cb27C](https://etherscan.io/address/0x34d19AC0a7B195359354DB4D5E8aDa7A1f2Cb27C) ##### 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 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), [0x7F1D4FE689B73B628285454667B93cfd09409f27](https://etherscan.io/address/0x7F1D4FE689B73B628285454667B93cfd09409f27), [0x4D014f3c5F33Aa9Cd1Dc29ce29618d07Ae666d15](https://etherscan.io/address/0x4D014f3c5F33Aa9Cd1Dc29ce29618d07Ae666d15), [0x69acfE2096Dfb8d5A041eF37693553c48d9BFd02](https://etherscan.io/address/0x69acfE2096Dfb8d5A041eF37693553c48d9BFd02), [0xa2A58E31C03C59e34ab4d996d811DA0C035BfDea](https://etherscan.io/address/0xa2A58E31C03C59e34ab4d996d811DA0C035BfDea) Used in: [Celo](https://l2beat.com/layer2s/projects/celo#OpFoundationUpgradeSafe), [Cyber](https://l2beat.com/layer2s/projects/cyber#OpFoundationUpgradeSafe), [Funki](https://l2beat.com/layer2s/projects/funki#OpFoundationUpgradeSafe), [Ink](https://l2beat.com/layer2s/projects/ink#OpFoundationUpgradeSafe), [Lisk](https://l2beat.com/layer2s/projects/lisk#OpFoundationUpgradeSafe), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#OpFoundationUpgradeSafe), [Settlus](https://l2beat.com/layer2s/projects/settlus#OpFoundationUpgradeSafe), [Shape](https://l2beat.com/layer2s/projects/shape#OpFoundationUpgradeSafe), [Soneium](https://l2beat.com/layer2s/projects/soneium#OpFoundationUpgradeSafe), [World Chain](https://l2beat.com/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 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://l2beat.com/layer2s/projects/celo#SaferSafes), [Cyber](https://l2beat.com/layer2s/projects/cyber#SaferSafes), [Funki](https://l2beat.com/layer2s/projects/funki#SaferSafes), [Ink](https://l2beat.com/layer2s/projects/ink#SaferSafes), [Lisk](https://l2beat.com/layer2s/projects/lisk#SaferSafes), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SaferSafes), [Settlus](https://l2beat.com/layer2s/projects/settlus#SaferSafes), [Shape](https://l2beat.com/layer2s/projects/shape#SaferSafes), [Soneium](https://l2beat.com/layer2s/projects/soneium#SaferSafes), [World Chain](https://l2beat.com/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://l2beat.com/layer2s/projects/celo#Optimism%20Security%20Council), [Cyber](https://l2beat.com/layer2s/projects/cyber#Optimism%20Security%20Council), [Funki](https://l2beat.com/layer2s/projects/funki#Optimism%20Security%20Council), [Ink](https://l2beat.com/layer2s/projects/ink#Optimism%20Security%20Council), [Lisk](https://l2beat.com/layer2s/projects/lisk#Optimism%20Security%20Council), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#Optimism%20Security%20Council), [Settlus](https://l2beat.com/layer2s/projects/settlus#Optimism%20Security%20Council), [Shape](https://l2beat.com/layer2s/projects/shape#Optimism%20Security%20Council), [Soneium](https://l2beat.com/layer2s/projects/soneium#Optimism%20Security%20Council), [World Chain](https://l2beat.com/layer2s/projects/world#Optimism%20Security%20Council) ##### 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://l2beat.com/layer2s/projects/celo#LivenessGuard), [Cyber](https://l2beat.com/layer2s/projects/cyber#LivenessGuard), [Funki](https://l2beat.com/layer2s/projects/funki#LivenessGuard), [Ink](https://l2beat.com/layer2s/projects/ink#LivenessGuard), [Lisk](https://l2beat.com/layer2s/projects/lisk#LivenessGuard), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#LivenessGuard), [Settlus](https://l2beat.com/layer2s/projects/settlus#LivenessGuard), [Shape](https://l2beat.com/layer2s/projects/shape#LivenessGuard), [Soneium](https://l2beat.com/layer2s/projects/soneium#LivenessGuard), [World Chain](https://l2beat.com/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://l2beat.com/layer2s/projects/unichain#Optimism Security Council) (Optimism Security Council) Used in: [Celo](https://l2beat.com/layer2s/projects/celo#Optimism%20Guardian%20Multisig), [Cyber](https://l2beat.com/layer2s/projects/cyber#Optimism%20Guardian%20Multisig), [Funki](https://l2beat.com/layer2s/projects/funki#Optimism%20Guardian%20Multisig), [Ink](https://l2beat.com/layer2s/projects/ink#Optimism%20Guardian%20Multisig), [Lisk](https://l2beat.com/layer2s/projects/lisk#Optimism%20Guardian%20Multisig), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#Optimism%20Guardian%20Multisig), [Settlus](https://l2beat.com/layer2s/projects/settlus#Optimism%20Guardian%20Multisig), [Shape](https://l2beat.com/layer2s/projects/shape#Optimism%20Guardian%20Multisig), [Soneium](https://l2beat.com/layer2s/projects/soneium#Optimism%20Guardian%20Multisig), [World Chain](https://l2beat.com/layer2s/projects/world#Optimism%20Guardian%20Multisig) ##### EOA 1 Addresses: [0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd](https://etherscan.io/address/0x2F60A5184c63ca94f82a27100643DbAbe4F3f7Fd) - 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://l2beat.com/layer2s/projects/celo#Optimism%20EOA%201), [Cyber](https://l2beat.com/layer2s/projects/cyber#Optimism%20EOA%201), [Funki](https://l2beat.com/layer2s/projects/funki#Optimism%20EOA%201), [Ink](https://l2beat.com/layer2s/projects/ink#Optimism%20EOA%201), [Lisk](https://l2beat.com/layer2s/projects/lisk#Optimism%20EOA%201), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#Optimism%20EOA%201), [Settlus](https://l2beat.com/layer2s/projects/settlus#Optimism%20EOA%201), [Shape](https://l2beat.com/layer2s/projects/shape#Optimism%20EOA%201), [Soneium](https://l2beat.com/layer2s/projects/soneium#Optimism%20EOA%201), [World Chain](https://l2beat.com/layer2s/projects/world#Optimism%20EOA%201) ### Unichain #### Actors ##### SuperchainProxyAdminOwner_L2Alias Addresses: [0x6B1BAE59D09fCcbdDB6C6cceb07B7279367C4E3b](https://uniscan.xyz/address/0x6B1BAE59D09fCcbdDB6C6cceb07B7279367C4E3b) - Can upgrade **with no delay** - 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] - SchemaRegistry [via: L2ProxyAdmin] - EAS [via: L2ProxyAdmin] ## Smart contracts ![A diagram of the smart contract architecture](https://l2beat.com/static/images/architecture/opstack-rollup-superchain-opfp-permissionless.111c6297.png) Explore these contracts and permissions in Disco, L2BEAT's contract explorer: https://disco.l2beat.com/ui/p/unichain ### Ethereum #### OptimismPortal2 Addresses: [0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code), [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 12, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 24d) - 2026-09-24 16:51 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#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)) - 2026-07-06 18:32 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2](https://etherscan.io/address/0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2#code) ([diff](https://disco.l2beat.com/diff/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B/eth:0xe89F13c5ee4033B2D3cD76C9d6958eFBfe26D3C2)) - 2026-02-10 17:30 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B](https://etherscan.io/address/0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B#code) ([diff](https://disco.l2beat.com/diff/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202/eth:0x97cEbbf8959e2A5476fbe9B98A21806Ec234609B)) - 2025-11-25 21:35 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x7Cf803296662e8C72A6C1d6450572209aCF7f202](https://etherscan.io/address/0x7Cf803296662e8C72A6C1d6450572209aCF7f202#code) ([diff](https://disco.l2beat.com/diff/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999/eth:0x7Cf803296662e8C72A6C1d6450572209aCF7f202)) - 2025-10-02 20:45 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x381E729FF983FA4BCEd820e7b922d79bF653B999](https://etherscan.io/address/0x381E729FF983FA4BCEd820e7b922d79bF653B999#code) ([diff](https://disco.l2beat.com/diff/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a/eth:0x381E729FF983FA4BCEd820e7b922d79bF653B999)) - 2025-07-24 18:12 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a](https://etherscan.io/address/0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a#code) ([diff](https://disco.l2beat.com/diff/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4/eth:0xEFEd7F38BB9BE74bBa583a1A5B7D0fe7C9D5787a)) - 2025-04-25 01:12 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0xB443Da3e07052204A02d630a8933dAc05a0d6fB4](https://etherscan.io/address/0xB443Da3e07052204A02d630a8933dAc05a0d6fB4#code) ([diff](https://disco.l2beat.com/diff/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd/eth:0xB443Da3e07052204A02d630a8933dAc05a0d6fB4)) - 2025-04-12 19:18 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd](https://etherscan.io/address/0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd#code) ([diff](https://disco.l2beat.com/diff/eth:0xe2F826324b2faf99E513D16D266c3F80aE87832B/eth:0x2D7e764a0D9919e16983a46595CfA81fc34fa7Cd)) - 2024-11-04 19:25 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0x0bd48f6B86a26D3a217d0Fa6FfE2B491B956A7a2#code): transaction [0x1623e586faeda506c832de15a948fd9c9d34da18c0ed5bbfc095dc1c0621f936](https://etherscan.io/tx/0x1623e586faeda506c832de15a948fd9c9d34da18c0ed5bbfc095dc1c0621f936), implementations: [0xe2F826324b2faf99E513D16D266c3F80aE87832B](https://etherscan.io/address/0xe2F826324b2faf99E513D16D266c3F80aE87832B#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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://l2beat.com/layer2s/projects/ink#OptimismPortal2), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#OptimismPortal2), [Soneium](https://l2beat.com/layer2s/projects/soneium#OptimismPortal2) #### DisputeGameFactory Addresses: [0x2F12d621a16e2d3285929C9996f478508951dFe4](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code), [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 11, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 28d) - 2026-09-24 16:51 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#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/0x2F12d621a16e2d3285929C9996f478508951dFe4#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/0x2F12d621a16e2d3285929C9996f478508951dFe4#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/0x2F12d621a16e2d3285929C9996f478508951dFe4#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)) - 2026-07-06 18:32 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-02-10 17:30 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c](https://etherscan.io/address/0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c#code) ([diff](https://disco.l2beat.com/diff/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50/eth:0xc040F392E52Cb6970CA8E110c280fE24E07C5e2c)) - 2025-11-25 21:35 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x74Fac1D45B98bae058F8F566201c9A81B85C7D50](https://etherscan.io/address/0x74Fac1D45B98bae058F8F566201c9A81B85C7D50#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x74Fac1D45B98bae058F8F566201c9A81B85C7D50)) - 2025-10-02 20:45 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-07-24 18:12 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x33D1e8571a85a538ed3D5A4d88f46C112383439D](https://etherscan.io/address/0x33D1e8571a85a538ed3D5A4d88f46C112383439D#code) ([diff](https://disco.l2beat.com/diff/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0/eth:0x33D1e8571a85a538ed3D5A4d88f46C112383439D)) - 2025-04-12 19:18 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x4bbA758F006Ef09402eF31724203F316ab74e4a0](https://etherscan.io/address/0x4bbA758F006Ef09402eF31724203F316ab74e4a0#code) ([diff](https://disco.l2beat.com/diff/eth:0xc641A33cab81C559F2bd4b21EA34C290E2440C2B/eth:0x4bbA758F006Ef09402eF31724203F316ab74e4a0)) - 2024-11-04 19:27 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0x2F12d621a16e2d3285929C9996f478508951dFe4#code): transaction [0x742808a336fb214d362e781aae88a3f818ba00a363900e7ca1915f0996b2060a](https://etherscan.io/tx/0x742808a336fb214d362e781aae88a3f818ba00a363900e7ca1915f0996b2060a), 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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner - **owner**: SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://l2beat.com/layer2s/projects/aevo#DisputeGameFactory), [BOB](https://l2beat.com/layer2s/projects/bob#DisputeGameFactory), [Ink](https://l2beat.com/layer2s/projects/ink#DisputeGameFactory), [Metal](https://l2beat.com/layer2s/projects/metal#DisputeGameFactory), [Mode Network](https://l2beat.com/layer2s/projects/mode#DisputeGameFactory), [Nillion](https://l2beat.com/layer2s/projects/nillion#DisputeGameFactory), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#DisputeGameFactory), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#DisputeGameFactory), [Phala](https://l2beat.com/layer2s/projects/phala#DisputeGameFactory), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#DisputeGameFactory), [Settlus](https://l2beat.com/layer2s/projects/settlus#DisputeGameFactory), [Shape](https://l2beat.com/layer2s/projects/shape#DisputeGameFactory), [Soneium](https://l2beat.com/layer2s/projects/soneium#DisputeGameFactory), [Superseed](https://l2beat.com/layer2s/projects/superseed#DisputeGameFactory), [World Chain](https://l2beat.com/layer2s/projects/world#DisputeGameFactory), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#DisputeGameFactory), [Zora](https://l2beat.com/layer2s/projects/zora#DisputeGameFactory) #### SystemConfig Addresses: [0xc407398d063f942feBbcC6F80a156b47F3f1BDA6](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code), [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 14, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 16d) - 2026-09-24 16:51 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#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)) - 2026-07-06 18:32 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x42Ad0173051225Ac784100e9acD43349707F4db9](https://etherscan.io/address/0x42Ad0173051225Ac784100e9acD43349707F4db9#code) ([diff](https://disco.l2beat.com/diff/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2/eth:0x42Ad0173051225Ac784100e9acD43349707F4db9)) - 2026-02-10 17:30 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xd392c27B84b1cA776528F2704BC67B82a62132d2](https://etherscan.io/address/0xd392c27B84b1cA776528F2704BC67B82a62132d2#code) ([diff](https://disco.l2beat.com/diff/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED/eth:0xd392c27B84b1cA776528F2704BC67B82a62132d2)) - 2025-11-25 21:35 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED](https://etherscan.io/address/0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED#code) ([diff](https://disco.l2beat.com/diff/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557/eth:0x2fA28989fc559836E9d66dFf3010C7F7f41c65ED)) - 2025-10-02 20:45 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557](https://etherscan.io/address/0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557#code) ([diff](https://disco.l2beat.com/diff/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa/eth:0x2bFE4A5Bd5A41e9d848d843ebCDFa15954e9A557)) - 2025-07-24 18:12 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa](https://etherscan.io/address/0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa#code) ([diff](https://disco.l2beat.com/diff/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647/eth:0xFaA660bf783CBAa55e1B7F3475C20Db74a53b9Fa)) - 2025-04-25 01:12 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x340f923E5c7cbB2171146f64169EC9d5a9FfE647](https://etherscan.io/address/0x340f923E5c7cbB2171146f64169EC9d5a9FfE647#code) ([diff](https://disco.l2beat.com/diff/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc/eth:0x340f923E5c7cbB2171146f64169EC9d5a9FfE647)) - 2025-04-12 19:18 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x760C48C62A85045A6B69f07F4a9f22868659CbCc](https://etherscan.io/address/0x760C48C62A85045A6B69f07F4a9f22868659CbCc#code) ([diff](https://disco.l2beat.com/diff/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC/eth:0x760C48C62A85045A6B69f07F4a9f22868659CbCc)) - 2025-03-19 15:24 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16](https://etherscan.io/tx/0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16), implementations: [0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC](https://etherscan.io/address/0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC#code) ([diff](https://disco.l2beat.com/diff/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375/eth:0xd81f43eDBCAcb4c29a9bA38a13Ee5d79278270cC)) - 2025-03-19 15:24 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16](https://etherscan.io/tx/0x191505a1bff29cc42fe5a1eb1888170c5241d552d7028d26ec3e54980980cf16), implementations: [0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375](https://etherscan.io/address/0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375#code) ([diff](https://disco.l2beat.com/diff/eth:0xF56D96B2535B932656d3c04Ebf51baBff241D886/eth:0xAB9d6cB7A427c0765163A7f45BB91cAfe5f2D375)) - 2024-11-04 19:25 UTC, deployment of [SystemConfig](https://etherscan.io/address/0xc407398d063f942feBbcC6F80a156b47F3f1BDA6#code): transaction [0xb9a9cca69cc08ba53aeb94e99695bbaec8c54a6431b258d2bca5d73a51663df9](https://etherscan.io/tx/0xb9a9cca69cc08ba53aeb94e99695bbaec8c54a6431b258d2bca5d73a51663df9), implementations: [0xF56D96B2535B932656d3c04Ebf51baBff241D886](https://etherscan.io/address/0xF56D96B2535B932656d3c04Ebf51baBff241D886#code) Contains configuration parameters such as the Sequencer address, gas limit on this chain and the unsafe block signer address. - Roles: - **admin**: ProxyAdmin; ultimately SuperchainProxyAdminOwner - **batcherHash**: EOA 1 - **owner**: Unichain Multisig 2 Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://l2beat.com/layer2s/projects/ink#SystemConfig), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SystemConfig), [Soneium](https://l2beat.com/layer2s/projects/soneium#SystemConfig) #### 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: 14d 21h ago, Avg upgrade interval: 2mo 22d) - 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://l2beat.com/layer2s/projects/celo#SuperchainConfig), [Cyber](https://l2beat.com/layer2s/projects/cyber#SuperchainConfig), [Funki](https://l2beat.com/layer2s/projects/funki#SuperchainConfig), [Ink](https://l2beat.com/layer2s/projects/ink#SuperchainConfig), [Lisk](https://l2beat.com/layer2s/projects/lisk#SuperchainConfig), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SuperchainConfig), [Settlus](https://l2beat.com/layer2s/projects/settlus#SuperchainConfig), [Shape](https://l2beat.com/layer2s/projects/shape#SuperchainConfig), [Soneium](https://l2beat.com/layer2s/projects/soneium#SuperchainConfig), [World Chain](https://l2beat.com/layer2s/projects/world#SuperchainConfig) #### L1StandardBridge (escrow) Addresses: [0x81014F44b0a345033bB2b3B21C7a1A308B35fEeA](https://etherscan.io/address/0x81014F44b0a345033bB2b3B21C7a1A308B35fEeA#code), [0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891](https://etherscan.io/address/0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) The main entry point to deposit ERC20 tokens from host chain to this chain. - Roles: - **admin**: ProxyAdmin; 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://l2beat.com/layer2s/projects/aevo#L1StandardBridge), [BOB](https://l2beat.com/layer2s/projects/bob#L1StandardBridge), [Ink](https://l2beat.com/layer2s/projects/ink#L1StandardBridge), [Metal](https://l2beat.com/layer2s/projects/metal#L1StandardBridge), [Mode Network](https://l2beat.com/layer2s/projects/mode#L1StandardBridge), [Nillion](https://l2beat.com/layer2s/projects/nillion#L1StandardBridge), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#L1StandardBridge), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#L1StandardBridge), [Phala](https://l2beat.com/layer2s/projects/phala#L1StandardBridge), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#L1StandardBridge), [Settlus](https://l2beat.com/layer2s/projects/settlus#L1StandardBridge), [Shape](https://l2beat.com/layer2s/projects/shape#L1StandardBridge), [Soneium](https://l2beat.com/layer2s/projects/soneium#L1StandardBridge), [Superseed](https://l2beat.com/layer2s/projects/superseed#L1StandardBridge), [World Chain](https://l2beat.com/layer2s/projects/world#L1StandardBridge), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#L1StandardBridge), [Zora](https://l2beat.com/layer2s/projects/zora#L1StandardBridge) #### L1CrossDomainMessenger Addresses: [0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code), [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 12, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 24d) - 2026-09-24 16:51 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#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)) - 2026-07-06 18:32 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-02-10 17:30 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-11-25 21:35 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0](https://etherscan.io/address/0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0#code) ([diff](https://disco.l2beat.com/diff/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6/eth:0xb686F13AfF1e427a1f993F29ab0F2E7383729FE0)) - 2025-10-02 20:45 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x22D12E0FAebD62d429514A65EBAe32dd316c12D6](https://etherscan.io/address/0x22D12E0FAebD62d429514A65EBAe32dd316c12D6#code) ([diff](https://disco.l2beat.com/diff/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54/eth:0x22D12E0FAebD62d429514A65EBAe32dd316c12D6)) - 2025-07-24 18:12 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54](https://etherscan.io/address/0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54#code) ([diff](https://disco.l2beat.com/diff/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B/eth:0xD26bB3aaAa4cB5638A8581A4c4b1d937D8E05c54)) - 2025-04-25 01:12 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x5D5a095665886119693F0B41d8DFeE78da033e8B](https://etherscan.io/address/0x5D5a095665886119693F0B41d8DFeE78da033e8B#code) ([diff](https://disco.l2beat.com/diff/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231/eth:0x5D5a095665886119693F0B41d8DFeE78da033e8B)) - 2025-04-12 19:18 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231](https://etherscan.io/address/0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231#code) ([diff](https://disco.l2beat.com/diff/eth:0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65/eth:0x3eA6084748ED1b2A9B5D4426181F1ad8C93F6231)) - 2024-11-04 19:27 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x9A3D64E386C18Cb1d6d5179a9596A4B5736e98A6#code): transaction [0x9efd53c7ecef0094ea6cd3a05d346daaee4a6c71c0dc69758bcdbac26b9ca9ef](https://etherscan.io/tx/0x9efd53c7ecef0094ea6cd3a05d346daaee4a6c71c0dc69758bcdbac26b9ca9ef), implementations: [0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65](https://etherscan.io/address/0xD3494713A5cfaD3F5359379DfA074E2Ac8C6Fd65#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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://l2beat.com/layer2s/projects/aevo#L1CrossDomainMessenger), [BOB](https://l2beat.com/layer2s/projects/bob#L1CrossDomainMessenger), [Ink](https://l2beat.com/layer2s/projects/ink#L1CrossDomainMessenger), [Metal](https://l2beat.com/layer2s/projects/metal#L1CrossDomainMessenger), [Mode Network](https://l2beat.com/layer2s/projects/mode#L1CrossDomainMessenger), [Nillion](https://l2beat.com/layer2s/projects/nillion#L1CrossDomainMessenger), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#L1CrossDomainMessenger), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#L1CrossDomainMessenger), [Phala](https://l2beat.com/layer2s/projects/phala#L1CrossDomainMessenger), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#L1CrossDomainMessenger), [Settlus](https://l2beat.com/layer2s/projects/settlus#L1CrossDomainMessenger), [Shape](https://l2beat.com/layer2s/projects/shape#L1CrossDomainMessenger), [Soneium](https://l2beat.com/layer2s/projects/soneium#L1CrossDomainMessenger), [Superseed](https://l2beat.com/layer2s/projects/superseed#L1CrossDomainMessenger), [World Chain](https://l2beat.com/layer2s/projects/world#L1CrossDomainMessenger), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#L1CrossDomainMessenger), [Zora](https://l2beat.com/layer2s/projects/zora#L1CrossDomainMessenger) #### L1ERC721Bridge Addresses: [0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code), [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 12, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 24d) - 2026-09-24 16:51 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#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)) - 2026-07-06 18:32 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-02-10 17:30 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-11-25 21:35 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9](https://etherscan.io/address/0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9#code) ([diff](https://disco.l2beat.com/diff/eth:0x7f1d12fB2911EB095278085f721e644C1f675696/eth:0x74f1aC50EB0BE98853805D381C884f5f9abDEcf9)) - 2025-10-02 20:45 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0x7f1d12fB2911EB095278085f721e644C1f675696](https://etherscan.io/address/0x7f1d12fB2911EB095278085f721e644C1f675696#code) ([diff](https://disco.l2beat.com/diff/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F/eth:0x7f1d12fB2911EB095278085f721e644C1f675696)) - 2025-07-24 18:12 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F](https://etherscan.io/address/0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F#code) ([diff](https://disco.l2beat.com/diff/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013/eth:0x25d6CeDEB277Ad7ebEe71226eD7877768E0B7A2F)) - 2025-04-25 01:12 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20](https://etherscan.io/tx/0xc74c5e0dddfa9e2d0fd5d902fb7b1aa4cc28ba034ebed7bf3a0aa3a8b8d21b20), implementations: [0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013](https://etherscan.io/address/0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013#code) ([diff](https://disco.l2beat.com/diff/eth:0x276d3730f219f7ec22274f7263180b8452B46d47/eth:0x7aE1d3BD877a4C5CA257404ce26BE93A02C98013)) - 2025-04-12 19:18 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x276d3730f219f7ec22274f7263180b8452B46d47](https://etherscan.io/address/0x276d3730f219f7ec22274f7263180b8452B46d47#code) ([diff](https://disco.l2beat.com/diff/eth:0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d/eth:0x276d3730f219f7ec22274f7263180b8452B46d47)) - 2024-11-04 19:26 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0xD04D0D87E0bd4D2E50286760a3EF323FeA6849Cf#code): transaction [0xb432a9b2f5b368a884c3a0d0708bf6949d38d8102b35bba9fa4d21c12865e601](https://etherscan.io/tx/0xb432a9b2f5b368a884c3a0d0708bf6949d38d8102b35bba9fa4d21c12865e601), implementations: [0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d](https://etherscan.io/address/0xAE2AF01232a6c4a4d3012C5eC5b1b35059caF10d#code) Used to bridge ERC-721 tokens from host chain to this chain. - Roles: - **admin**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://l2beat.com/layer2s/projects/aevo#L1ERC721Bridge), [BOB](https://l2beat.com/layer2s/projects/bob#L1ERC721Bridge), [Ink](https://l2beat.com/layer2s/projects/ink#L1ERC721Bridge), [Metal](https://l2beat.com/layer2s/projects/metal#L1ERC721Bridge), [Mode Network](https://l2beat.com/layer2s/projects/mode#L1ERC721Bridge), [Nillion](https://l2beat.com/layer2s/projects/nillion#L1ERC721Bridge), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#L1ERC721Bridge), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#L1ERC721Bridge), [Phala](https://l2beat.com/layer2s/projects/phala#L1ERC721Bridge), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#L1ERC721Bridge), [Settlus](https://l2beat.com/layer2s/projects/settlus#L1ERC721Bridge), [Shape](https://l2beat.com/layer2s/projects/shape#L1ERC721Bridge), [Soneium](https://l2beat.com/layer2s/projects/soneium#L1ERC721Bridge), [Superseed](https://l2beat.com/layer2s/projects/superseed#L1ERC721Bridge), [World Chain](https://l2beat.com/layer2s/projects/world#L1ERC721Bridge), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#L1ERC721Bridge), [Zora](https://l2beat.com/layer2s/projects/zora#L1ERC721Bridge) #### 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://l2beat.com/layer2s/projects/celo#LivenessModule), [Cyber](https://l2beat.com/layer2s/projects/cyber#LivenessModule), [Funki](https://l2beat.com/layer2s/projects/funki#LivenessModule), [Ink](https://l2beat.com/layer2s/projects/ink#LivenessModule), [Lisk](https://l2beat.com/layer2s/projects/lisk#LivenessModule), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#LivenessModule), [Settlus](https://l2beat.com/layer2s/projects/settlus#LivenessModule), [Shape](https://l2beat.com/layer2s/projects/shape#LivenessModule), [Soneium](https://l2beat.com/layer2s/projects/soneium#LivenessModule), [World Chain](https://l2beat.com/layer2s/projects/world#LivenessModule) #### ETHLockbox (escrow) Addresses: [0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code), [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 6, Last upgrade: 14d 21h ago, Avg upgrade interval: 2mo 3d) - 2026-09-24 16:51 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#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)) - 2026-07-06 18:32 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xb3A24DB07038b51962026329B62E7a965d56A6ad](https://etherscan.io/address/0xb3A24DB07038b51962026329B62E7a965d56A6ad#code) ([diff](https://disco.l2beat.com/diff/eth:0x784d2F03593A42A6E4676A012762F18775ecbBe6/eth:0xb3A24DB07038b51962026329B62E7a965d56A6ad)) - 2025-07-24 18:12 UTC, deployment of [ETHLockbox](https://etherscan.io/address/0x08bA0023eD60C7Bd040716dD13C45fA0062df5C5#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), implementations: [0x784d2F03593A42A6E4676A012762F18775ecbBe6](https://etherscan.io/address/0x784d2F03593A42A6E4676A012762F18775ecbBe6#code) A simple escrow contract storing ETH for the canonical bridge. - Roles: - **admin**: ProxyAdmin; 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://l2beat.com/layer2s/projects/ink#ETHLockbox), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#ETHLockbox), [Soneium](https://l2beat.com/layer2s/projects/soneium#ETHLockbox) #### Escrow Addresses: [0x1196F688C585D3E5C895Ef8954FFB0dCDAfc566A](https://etherscan.io/address/0x1196F688C585D3E5C895Ef8954FFB0dCDAfc566A#code) Simple escrow that accepts tokens and allows to configure permissioned addresses that can access the tokens. #### 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://l2beat.com/layer2s/projects/ink#SuperFaultDisputeGame), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SuperFaultDisputeGame) #### 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://l2beat.com/layer2s/projects/ink#PreimageOracle), [Katana](https://l2beat.com/layer2s/projects/katana#PreimageOracle), [Metal](https://l2beat.com/layer2s/projects/metal#PreimageOracle), [Mode Network](https://l2beat.com/layer2s/projects/mode#PreimageOracle), [Nillion](https://l2beat.com/layer2s/projects/nillion#PreimageOracle), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#PreimageOracle), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#PreimageOracle), [Phala](https://l2beat.com/layer2s/projects/phala#PreimageOracle), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#PreimageOracle), [Settlus](https://l2beat.com/layer2s/projects/settlus#PreimageOracle), [Shape](https://l2beat.com/layer2s/projects/shape#PreimageOracle), [Superseed](https://l2beat.com/layer2s/projects/superseed#PreimageOracle), [World Chain](https://l2beat.com/layer2s/projects/world#PreimageOracle), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#PreimageOracle), [Zora](https://l2beat.com/layer2s/projects/zora#PreimageOracle) #### AnchorStateRegistry Addresses: [0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code), [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 8, Last upgrade: 14d 21h ago, Avg upgrade interval: 1mo 19d) - 2026-09-24 16:51 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#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)) - 2026-07-06 18:32 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-02-10 17:30 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5](https://etherscan.io/address/0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0x36398155Cd17cfe804F69b233eDDA800DD4D5aA5)) - 2025-10-02 20:45 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5](https://etherscan.io/tx/0xc98240172fa3950ec9c62f32cc09d0eb0ed21684b02f1b2677357674cda64ca5), implementations: [0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E](https://etherscan.io/address/0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E#code) ([diff](https://disco.l2beat.com/diff/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E/eth:0xeb69cC681E8D4a557b30DFFBAd85aFfD47a2CF2E)) - 2025-07-24 18:12 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x27Cf508E4E3Aa8d30b3226aC3b5Ea0e8bcaCAFF9#code): transaction [0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959](https://etherscan.io/tx/0x1f1f283ad793a901a94e11241d46b87cd264b2e276a690b9554148ba56c57959), 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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://l2beat.com/layer2s/projects/ink#AnchorStateRegistry), [Katana](https://l2beat.com/layer2s/projects/katana#AnchorStateRegistry), [Metal](https://l2beat.com/layer2s/projects/metal#AnchorStateRegistry), [Mode Network](https://l2beat.com/layer2s/projects/mode#AnchorStateRegistry), [Nillion](https://l2beat.com/layer2s/projects/nillion#AnchorStateRegistry), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#AnchorStateRegistry), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#AnchorStateRegistry), [Phala](https://l2beat.com/layer2s/projects/phala#AnchorStateRegistry), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#AnchorStateRegistry), [Settlus](https://l2beat.com/layer2s/projects/settlus#AnchorStateRegistry), [Shape](https://l2beat.com/layer2s/projects/shape#AnchorStateRegistry), [Soneium](https://l2beat.com/layer2s/projects/soneium#AnchorStateRegistry), [Superseed](https://l2beat.com/layer2s/projects/superseed#AnchorStateRegistry), [World Chain](https://l2beat.com/layer2s/projects/world#AnchorStateRegistry), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#AnchorStateRegistry), [Zora](https://l2beat.com/layer2s/projects/zora#AnchorStateRegistry) #### ProxyAdmin Addresses: [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) - Roles: - **owner**: SuperchainProxyAdminOwner #### SuperchainProxyAdmin Addresses: [0x543bA4AADBAb8f9025686Bd03993043599c6fB04](https://etherscan.io/address/0x543bA4AADBAb8f9025686Bd03993043599c6fB04#code) - Roles: - **owner**: SuperchainProxyAdminOwner Implementation used in: [Celo](https://l2beat.com/layer2s/projects/celo#SuperchainProxyAdmin), [Cyber](https://l2beat.com/layer2s/projects/cyber#SuperchainProxyAdmin), [Funki](https://l2beat.com/layer2s/projects/funki#SuperchainProxyAdmin), [Ink](https://l2beat.com/layer2s/projects/ink#SuperchainProxyAdmin), [Lisk](https://l2beat.com/layer2s/projects/lisk#SuperchainProxyAdmin), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SuperchainProxyAdmin), [Settlus](https://l2beat.com/layer2s/projects/settlus#SuperchainProxyAdmin), [Shape](https://l2beat.com/layer2s/projects/shape#SuperchainProxyAdmin), [Soneium](https://l2beat.com/layer2s/projects/soneium#SuperchainProxyAdmin), [World Chain](https://l2beat.com/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://l2beat.com/layer2s/projects/ink#SuperPermissionedDisputeGame), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#SuperPermissionedDisputeGame), [Soneium](https://l2beat.com/layer2s/projects/soneium#SuperPermissionedDisputeGame) #### DelayedWETH Addresses: [0x74ad145aC900F1DD5551F0C9E143314DC4022FCf](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#code), [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 5, Last upgrade: 14d 21h ago, Avg upgrade interval: 15d 19h) - 2026-09-24 16:51 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#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)) - 2026-07-06 18:32 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x74ad145aC900F1DD5551F0C9E143314DC4022FCf#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), 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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Ink](https://l2beat.com/layer2s/projects/ink#DelayedWETH), [Katana](https://l2beat.com/layer2s/projects/katana#DelayedWETH), [Metal](https://l2beat.com/layer2s/projects/metal#DelayedWETH), [Mode Network](https://l2beat.com/layer2s/projects/mode#DelayedWETH), [Nillion](https://l2beat.com/layer2s/projects/nillion#DelayedWETH), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#DelayedWETH), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#DelayedWETH), [Phala](https://l2beat.com/layer2s/projects/phala#DelayedWETH), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#DelayedWETH), [Settlus](https://l2beat.com/layer2s/projects/settlus#DelayedWETH), [Shape](https://l2beat.com/layer2s/projects/shape#DelayedWETH), [Soneium](https://l2beat.com/layer2s/projects/soneium#DelayedWETH), [Superseed](https://l2beat.com/layer2s/projects/superseed#DelayedWETH), [World Chain](https://l2beat.com/layer2s/projects/world#DelayedWETH), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#DelayedWETH), [Zora](https://l2beat.com/layer2s/projects/zora#DelayedWETH) #### L1ERC20TokenBridge (escrow) Addresses: [0x755610f5Be536Ad7afBAa7c10F3E938Ea3aa1877](https://etherscan.io/address/0x755610f5Be536Ad7afBAa7c10F3E938Ea3aa1877#code), [0x6078232C54d956c901620fa4590e0F7E37c2B82f](https://etherscan.io/address/0x6078232C54d956c901620fa4590e0F7E37c2B82f#code) (Implementation (Upgradable)), [0x3e40D73EB977Dc6a537aF587D48316feE66E9C8c](https://etherscan.io/address/0x3e40D73EB977Dc6a537aF587D48316feE66E9C8c#code) (Admin) **Past upgrades** (Count of upgrades: No upgrades, Last upgrade: N/A, Avg upgrade interval: N/A) - 2025-02-14 07:53 UTC, deployment of [L1ERC20TokenBridge](https://etherscan.io/address/0x755610f5Be536Ad7afBAa7c10F3E938Ea3aa1877#code): transaction [0x09f1292f517ff6453a28592ca3def9cfcc55d8738877af3b9830f0c457009c02](https://etherscan.io/tx/0x09f1292f517ff6453a28592ca3def9cfcc55d8738877af3b9830f0c457009c02), implementations: [0x6078232C54d956c901620fa4590e0F7E37c2B82f](https://etherscan.io/address/0x6078232C54d956c901620fa4590e0F7E37c2B82f#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://l2beat.com/layer2s/projects/celo#DeputyPauseModule), [Cyber](https://l2beat.com/layer2s/projects/cyber#DeputyPauseModule), [Funki](https://l2beat.com/layer2s/projects/funki#DeputyPauseModule), [Ink](https://l2beat.com/layer2s/projects/ink#DeputyPauseModule), [Lisk](https://l2beat.com/layer2s/projects/lisk#DeputyPauseModule), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#DeputyPauseModule), [Settlus](https://l2beat.com/layer2s/projects/settlus#DeputyPauseModule), [Shape](https://l2beat.com/layer2s/projects/shape#DeputyPauseModule), [Soneium](https://l2beat.com/layer2s/projects/soneium#DeputyPauseModule), [World Chain](https://l2beat.com/layer2s/projects/world#DeputyPauseModule) #### OptimismMintableERC20Factory Addresses: [0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code), [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) (Implementation (Upgradable)), [0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4](https://etherscan.io/address/0x3B73Fa8d82f511A3caE17B5a26E4E1a2d5E2f2A4#code) (Admin) **Past upgrades** (Count of upgrades: 9, Last upgrade: 14d 21h ago, Avg upgrade interval: 2mo 10d) - 2026-09-24 16:51 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#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)) - 2026-07-06 18:32 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-07-06 18:32 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421](https://etherscan.io/tx/0xb3c65cbf6285d4b32d576c866fffced1c77747c53163b604e20feb6aad121421), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-02-10 17:30 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca](https://etherscan.io/tx/0x5672a02ba8c40bd35c87787ceddff5181c588e697a1924be6ea061af71cbb4ca), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-11-25 21:35 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6](https://etherscan.io/tx/0x7c9e6b65258838fb38bc0bf584cb0c0802bc0dfbbe877a8639880e2ed88b3aa6), implementations: [0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB](https://etherscan.io/address/0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB#code) ([diff](https://disco.l2beat.com/diff/eth:0x5493f4677A186f64805fe7317D6993ba4863988F/eth:0x8ee6fB13c6c9a7e401531168E196Fbf8b05cEabB)) - 2025-04-12 19:18 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159](https://etherscan.io/tx/0x7e5e478cafbe30293645e6972a477f77dcfdc006c4cf1dd248a94e6386d04159), implementations: [0x5493f4677A186f64805fe7317D6993ba4863988F](https://etherscan.io/address/0x5493f4677A186f64805fe7317D6993ba4863988F#code) ([diff](https://disco.l2beat.com/diff/eth:0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846/eth:0x5493f4677A186f64805fe7317D6993ba4863988F)) - 2024-11-04 19:26 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0xA2B597EaeAcb6F627e088cbEaD319e934ED5edad#code): transaction [0x14bd9cb3f3d081f9b569dfeccac4821a21e4fe65b0c1a1b1b80f0369cca63695](https://etherscan.io/tx/0x14bd9cb3f3d081f9b569dfeccac4821a21e4fe65b0c1a1b1b80f0369cca63695), implementations: [0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846](https://etherscan.io/address/0xE01efbeb1089D1d1dB9c6c8b135C934C0734c846#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**: ProxyAdmin; ultimately SuperchainProxyAdminOwner Can be upgraded by: SuperchainProxyAdminOwner with no delay Implementation used in: [Aevo](https://l2beat.com/layer2s/projects/aevo#OptimismMintableERC20Factory), [BOB](https://l2beat.com/layer2s/projects/bob#OptimismMintableERC20Factory), [Ink](https://l2beat.com/layer2s/projects/ink#OptimismMintableERC20Factory), [Metal](https://l2beat.com/layer2s/projects/metal#OptimismMintableERC20Factory), [Mode Network](https://l2beat.com/layer2s/projects/mode#OptimismMintableERC20Factory), [Nillion](https://l2beat.com/layer2s/projects/nillion#OptimismMintableERC20Factory), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#OptimismMintableERC20Factory), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#OptimismMintableERC20Factory), [Phala](https://l2beat.com/layer2s/projects/phala#OptimismMintableERC20Factory), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#OptimismMintableERC20Factory), [Settlus](https://l2beat.com/layer2s/projects/settlus#OptimismMintableERC20Factory), [Shape](https://l2beat.com/layer2s/projects/shape#OptimismMintableERC20Factory), [Soneium](https://l2beat.com/layer2s/projects/soneium#OptimismMintableERC20Factory), [Superseed](https://l2beat.com/layer2s/projects/superseed#OptimismMintableERC20Factory), [World Chain](https://l2beat.com/layer2s/projects/world#OptimismMintableERC20Factory), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#OptimismMintableERC20Factory), [Zora](https://l2beat.com/layer2s/projects/zora#OptimismMintableERC20Factory) #### 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://l2beat.com/layer2s/projects/ink#MIPS), [Katana](https://l2beat.com/layer2s/projects/katana#MIPS), [Metal](https://l2beat.com/layer2s/projects/metal#MIPS), [Mode Network](https://l2beat.com/layer2s/projects/mode#MIPS), [Nillion](https://l2beat.com/layer2s/projects/nillion#MIPS), [OP Mainnet](https://l2beat.com/layer2s/projects/op-mainnet#MIPS), [Orderly Network](https://l2beat.com/layer2s/projects/orderly#MIPS), [Phala](https://l2beat.com/layer2s/projects/phala#MIPS), [Ronin](https://l2beat.com/layer2s/projects/ronin-network#MIPS), [Settlus](https://l2beat.com/layer2s/projects/settlus#MIPS), [Shape](https://l2beat.com/layer2s/projects/shape#MIPS), [Superseed](https://l2beat.com/layer2s/projects/superseed#MIPS), [World Chain](https://l2beat.com/layer2s/projects/world#MIPS), [Zircuit](https://l2beat.com/layer2s/projects/zircuit#MIPS), [Zora](https://l2beat.com/layer2s/projects/zora#MIPS) ### Unichain #### DeployerWhitelist Addresses: [0x4200000000000000000000000000000000000002](https://uniscan.xyz/address/0x4200000000000000000000000000000000000002#code), [0xc0d3c0d3C0d3c0D3c0d3C0D3c0d3C0d3c0D30002](https://uniscan.xyz/address/0xc0d3c0d3C0d3c0D3c0d3C0D3c0d3C0d3c0D30002#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L2CrossDomainMessenger Addresses: [0x4200000000000000000000000000000000000007](https://uniscan.xyz/address/0x4200000000000000000000000000000000000007#code), [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://uniscan.xyz/address/0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [L2CrossDomainMessenger](https://uniscan.xyz/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2CrossDomainMessenger](https://uniscan.xyz/address/0x4200000000000000000000000000000000000007#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x250AF3f400cf8Aac8D410c90f1ba3968dD87DF96](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### GasPriceOracle Addresses: [0x420000000000000000000000000000000000000F](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code), [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://uniscan.xyz/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 2, Last upgrade: 3mo 2d ago, Avg upgrade interval: 5mo 22d) - 2026-07-08 16:00 UTC, upgrade of [GasPriceOracle](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x547d0fba434877D7237d511cF87FABe2ee26b152](https://uniscan.xyz/address/0x547d0fba434877D7237d511cF87FABe2ee26b152#code) ([diff](https://disco.l2beat.com/diff/unichain:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1/unichain:0x547d0fba434877D7237d511cF87FABe2ee26b152)) - 2025-12-02 16:00 UTC, upgrade of [GasPriceOracle](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9](https://uniscan.xyz/tx/0xc7c01d75d0b6950fcd30b448cba848e9841ab9ebb6b46eed9ecde4ba05ad0fd9), implementations: [0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1](https://uniscan.xyz/address/0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1#code) ([diff](https://disco.l2beat.com/diff/unichain:0x93e57A196454CB919193fa9946f14943cf733845/unichain:0x4f1db3c6AbD250ba86E0928471A8F7DB3AFd88F1)) - 2025-05-09 16:00 UTC, deployment of [GasPriceOracle](https://uniscan.xyz/address/0x420000000000000000000000000000000000000F#code): transaction [0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30](https://uniscan.xyz/tx/0xb6560306ccb0e772b132a8a6dd78244c0d7ac270c80baba40f95006184926c30), implementations: [0x93e57A196454CB919193fa9946f14943cf733845](https://uniscan.xyz/address/0x93e57A196454CB919193fa9946f14943cf733845#code) Provides the current gas price for L2 transactions. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L2StandardBridge Addresses: [0x4200000000000000000000000000000000000010](https://uniscan.xyz/address/0x4200000000000000000000000000000000000010#code), [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://uniscan.xyz/address/0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [L2StandardBridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2StandardBridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000010#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAE9ed42f43a3ee45c3A9dEf8ae6B48cBb58Ed1a1](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### SequencerFeeVault Addresses: [0x4200000000000000000000000000000000000011](https://uniscan.xyz/address/0x4200000000000000000000000000000000000011#code), [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://uniscan.xyz/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [SequencerFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [SequencerFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000011#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA](https://uniscan.xyz/address/0xb178cdAa8336f25624A63C049EdB5AF7ca36C2dA#code) Collects the sequencer fees, which are withdrawable to the FeesCollector on L1. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### OptimismMintableERC20Factory Addresses: [0x4200000000000000000000000000000000000012](https://uniscan.xyz/address/0x4200000000000000000000000000000000000012#code), [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://uniscan.xyz/address/0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC20Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC20Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000012#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xAF87f2Fd347aCb94656f9F715B4f2409B98e75b9](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L1BlockNumber Addresses: [0x4200000000000000000000000000000000000013](https://uniscan.xyz/address/0x4200000000000000000000000000000000000013#code), [0xC0D3C0d3C0D3c0D3C0d3c0D3C0d3c0d3C0d30013](https://uniscan.xyz/address/0xC0D3C0d3C0D3c0D3C0d3c0D3C0d3c0d3C0d30013#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) Simple contract that returns the latest L1 block number. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L2ERC721Bridge Addresses: [0x4200000000000000000000000000000000000014](https://uniscan.xyz/address/0x4200000000000000000000000000000000000014#code), [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://uniscan.xyz/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [L2ERC721Bridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L2ERC721Bridge](https://uniscan.xyz/address/0x4200000000000000000000000000000000000014#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833](https://uniscan.xyz/address/0x716eAd0Cf3e7FF86A02D4F8cb41a6D14922fA833#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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L1Block Addresses: [0x4200000000000000000000000000000000000015](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code), [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://uniscan.xyz/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 2, Last upgrade: 3mo 2d ago, Avg upgrade interval: 5mo 22d) - 2026-07-08 16:00 UTC, upgrade of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x6a97C5D55A21265326150Efe12FC30Fb21cbff56](https://uniscan.xyz/address/0x6a97C5D55A21265326150Efe12FC30Fb21cbff56#code) ([diff](https://disco.l2beat.com/diff/unichain:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C/unichain:0x6a97C5D55A21265326150Efe12FC30Fb21cbff56)) - 2025-12-02 16:00 UTC, upgrade of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a](https://uniscan.xyz/tx/0xcd60191626fa3124e7031235c52f0adf6be545ebbd7cf55641bd9dabcbedaf6a), implementations: [0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C](https://uniscan.xyz/address/0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C#code) ([diff](https://disco.l2beat.com/diff/unichain:0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12/unichain:0x3Ba4007f5C922FBb33C454B41ea7a1f11E83df2C)) - 2025-05-09 16:00 UTC, deployment of [L1Block](https://uniscan.xyz/address/0x4200000000000000000000000000000000000015#code): transaction [0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd](https://uniscan.xyz/tx/0xe992e00998b34075506d2726a274db07a62af6cdd9d527bfda9128114603cfbd), implementations: [0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12](https://uniscan.xyz/address/0xFf256497D61dcd71a9e9Ff43967C13fdE1F72D12#code) Simple contract that returns information about the latest L1 block, which is derived permissionlessly from the L1 chain. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L2ToL1MessagePasser Addresses: [0x4200000000000000000000000000000000000016](https://uniscan.xyz/address/0x4200000000000000000000000000000000000016#code), [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://uniscan.xyz/address/0x27E51B2254433A3284D9ba73Ea551C397DB2a124#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/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://uniscan.xyz/address/0x4200000000000000000000000000000000000016#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x27E51B2254433A3284D9ba73Ea551C397DB2a124](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### OptimismMintableERC721Factory Addresses: [0x4200000000000000000000000000000000000017](https://uniscan.xyz/address/0x4200000000000000000000000000000000000017#code), [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://uniscan.xyz/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [OptimismMintableERC721Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf43862B9d814BB4504158CecCB0b74b31265e4eE/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [OptimismMintableERC721Factory](https://uniscan.xyz/address/0x4200000000000000000000000000000000000017#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf43862B9d814BB4504158CecCB0b74b31265e4eE](https://uniscan.xyz/address/0xf43862B9d814BB4504158CecCB0b74b31265e4eE#code) Factory contract to create bridge compliant ERC721 IOU token representations of bridged L1 ERC721 tokens. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L2ProxyAdmin Addresses: [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code), [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://uniscan.xyz/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [L2ProxyAdmin](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code): transaction [0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c](https://uniscan.xyz/tx/0x48aa8d6a9d281bf0eaa204e895acdfe0ba38640c34f6d133b2f4ecb879f5c72c), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://uniscan.xyz/address/0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F#code) ([diff](https://disco.l2beat.com/diff/unichain:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F/unichain:0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F)) - 2026-07-08 16:00 UTC, deployment of [L2ProxyAdmin](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x893c2CEEb71D38514daF67728d3Ff1b213FC4B5F](https://uniscan.xyz/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_L2Alias - **owner**: SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### BaseFeeVault Addresses: [0x4200000000000000000000000000000000000019](https://uniscan.xyz/address/0x4200000000000000000000000000000000000019#code), [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [BaseFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [BaseFeeVault](https://uniscan.xyz/address/0x4200000000000000000000000000000000000019#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) Collects EIP-1559 base fees, which are withdrawable to the FeesCollector on L1. - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### L1FeeVault Addresses: [0x420000000000000000000000000000000000001A](https://uniscan.xyz/address/0x420000000000000000000000000000000000001A#code), [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/address/0xf7bed7215EEF1003fac426682Cf2edeb958569f7#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/address/0x4200000000000000000000000000000000000018#code) (Admin) **Past upgrades** (Count of upgrades: 1, Last upgrade: 3mo 2d ago, Avg upgrade interval: 1mo 16d) - 2026-07-08 16:00 UTC, upgrade of [L1FeeVault](https://uniscan.xyz/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914](https://uniscan.xyz/address/0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914#code) ([diff](https://disco.l2beat.com/diff/unichain:0xf7bed7215EEF1003fac426682Cf2edeb958569f7/unichain:0x2A5A3eabB9Fd571A3Af0299eebdF8EaafE29a914)) - 2026-07-08 16:00 UTC, deployment of [L1FeeVault](https://uniscan.xyz/address/0x420000000000000000000000000000000000001A#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xf7bed7215EEF1003fac426682Cf2edeb958569f7](https://uniscan.xyz/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_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### SchemaRegistry Addresses: [0x4200000000000000000000000000000000000020](https://uniscan.xyz/address/0x4200000000000000000000000000000000000020#code), [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://uniscan.xyz/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/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 [SchemaRegistry](https://uniscan.xyz/address/0x4200000000000000000000000000000000000020#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34](https://uniscan.xyz/address/0x70DE55BC0bfBC52C5D0CCA1DA5816c2428886A34#code) Contracts to register schemas for the Ethereum Attestation Service (EAS). - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### EAS Addresses: [0x4200000000000000000000000000000000000021](https://uniscan.xyz/address/0x4200000000000000000000000000000000000021#code), [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://uniscan.xyz/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) (Implementation (Upgradable)), [0x4200000000000000000000000000000000000018](https://uniscan.xyz/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 [EAS](https://uniscan.xyz/address/0x4200000000000000000000000000000000000021#code): transaction [0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e](https://uniscan.xyz/tx/0xd2e9eb2ba77098610e7dda134e70f741f7456f4ec49912d667860c40988dfd8e), implementations: [0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6](https://uniscan.xyz/address/0xbEc660b456B84A081E90aF29BE43385BDa5bF7b6#code) Contract containing the main logic for the Ethereum Attestation Service (EAS). - Roles: - **admin**: L2ProxyAdmin; ultimately SuperchainProxyAdminOwner_L2Alias Can be upgraded by: SuperchainProxyAdminOwner_L2Alias with no delay #### FeeSplitter Addresses: [0x4300c0D3c0d3c0d3c0d3c0d3C0D3c0d3c0d30001](https://uniscan.xyz/address/0x4300c0D3c0d3c0d3c0d3c0d3C0D3c0d3c0d30001#code) #### L1Splitter (0x4300…0002) Addresses: [0x4300C0D3C0D3C0D3C0d3C0d3c0d3C0d3C0d30002](https://uniscan.xyz/address/0x4300C0D3C0D3C0D3C0d3C0d3c0d3C0d3C0d30002#code) Automatically collects ETH on L2 and periodically bridges it back to Ethereum Layer 1 to a specified recipient address (0xa3d596EAfaB6B13Ab18D40FaE1A962700C84ADEa). #### L1Splitter (0x4300…0003) Addresses: [0x4300c0d3c0d3c0D3c0d3C0D3c0d3C0D3C0D30003](https://uniscan.xyz/address/0x4300c0d3c0d3c0D3c0d3C0D3c0d3C0D3C0D30003#code) Automatically collects ETH on L2 and periodically bridges it back to Ethereum Layer 1 to a specified recipient address (0x7078c4537C04c2b2E52ddBa06074dBdACF23cA15). #### NetFeeSplitter Addresses: [0x4300c0D3c0D3c0D3c0D3c0D3C0D3c0d3c0D30004](https://uniscan.xyz/address/0x4300c0D3c0D3c0D3c0D3c0D3C0D3c0d3c0D30004#code) 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://l2beat.com/layer2s/projects/op-mainnet), [Ink](https://l2beat.com/layer2s/projects/ink), [Unichain](https://l2beat.com/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.