# Whitechain Markdown version of https://l2beat.com/layer2s/projects/whitechain ## Summary **Warning:** Why is the project listed in others? The proof system isn't fully functional. Consequence: projects without a proper proof system fully rely on single entities to safely update the state. A malicious proposer can finalize an invalid state, which can cause loss of funds. Learn more about the [recategorisation](https://medium.com/l2beat/framework-update-l2-projects-recategorisation-5d43b0d1fe50). - Total Value Secured: $461.89 M (-3.48% compared to seven days ago; canonically bridged $0.00, natively minted $461.82 M, externally bridged $69.99 K; 0.01% with additional trust assumptions compared to the tokens involved and the Stage assigned to the project's canonical messaging bridge) - **Warning:** The WBT token associated with Whitechain accounts for 99.9% of the TVS! (sentiment: bad) - TVS by asset: Stablecoins $69.99 K (0.01%), Other $461.82 M (99.9%) - Associated tokens: WBT: $461.82 M (99.9% of TVS) - Past day UOPS: <0.01 (-66.4% compared to seven days ago) - Gas token: WBT - Type: Other - Purpose: Universal - Host chain: Ethereum - Chain ID: 1875 ### Risks - Sequencer failure: Self sequence (12h delay; sentiment: good) - State validation: None (sentiment: bad) - Data availability: Onchain (sentiment: good) - Exit window: None (sentiment: bad) - Proposer failure: Cannot withdraw (sentiment: bad) ### About Whitechain is an Optimistic rollup based on the OP Stack, built by the WhiteBIT exchange. It migrated from an independent PoA chain to a Layer 2 in October 2026, keeping WBT as the custom gas token. ### Links - Website: https://whitechain.io/ - Bridge: https://bridge.whitechain.io/ - Docs: https://docs.whitechain.io/ - Explorer: https://explorer.whitechain.io/ - Repository: https://github.com/whitebit-exchange - Social: https://x.com/Whitechain_io, https://t.me/Whitechain_io, https://discord.gg/7GwAXYmaW9 - Contracts explorer (Disco): https://disco.l2beat.com/ui/p/whitechain ### 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 - Migrated from L1 to Ethereum L2: This project has migrated from being a standalone L1 blockchain to an Ethereum L2 ## Value Secured The interactive TVS charts are shown on [the HTML page](https://l2beat.com/layer2s/projects/whitechain#tvs). Token by token: [TVS breakdown](https://l2beat.com/layer2s/projects/whitechain/tvs-breakdown). - [TVS chart (JSON)](https://l2beat.com/api/scaling/tvs/whitechain) - [TVS breakdown by token (JSON)](https://l2beat.com/api/scaling/tvs/whitechain/breakdown) ## Activity The interactive activity chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/whitechain#activity). - [Activity chart (JSON)](https://l2beat.com/api/scaling/activity/whitechain) ## 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/whitechain#onchain-costs). ### Tracked transactions #### Batch submissions - transfer: 2026-10-26 03:04 UTC - now; currently used; from: [0x681FCc4272c14f70203Ea655B1EAF9A20557a473](https://etherscan.io/address/0x681FCc4272c14f70203Ea655B1EAF9A20557a473); to: [0x00AAa63A0Af768749A569DfdA5FEad3438091ba1](https://etherscan.io/address/0x00AAa63A0Af768749A569DfdA5FEad3438091ba1) #### State updates - functionCall: 2026-10-26 03:04 UTC - now; currently used; address: [0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3); selector: 0x82ecf2f6; signature: `function create(uint32 _gameType, bytes32 _rootClaim, bytes _extraData) payable returns (address proxy_)` ## Data posted This section shows how much data the project publishes to Ethereum over time. It leaves out data posted to other data-availability (DA) layers. The project currently posts data to [Ethereum](https://l2beat.com/projects/ethereum). The interactive data posted chart is shown on [the HTML page](https://l2beat.com/layer2s/projects/whitechain#data-posted). ### Tracked transactions #### Blob submissions - DA layer Ethereum: from block 26274467 to now; currently used; inbox: [0x00aaa63a0af768749a569dfda5fead3438091ba1](https://etherscan.io/address/0x00aaa63a0af768749a569dfda5fead3438091ba1); sequencers: [0x681fcc4272c14f70203ea655b1eaf9a20557a473](https://etherscan.io/address/0x681fcc4272c14f70203ea655b1eaf9a20557a473) ## 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/whitechain#liveness). ### Tracked transactions #### Batch submissions - transfer: 2026-10-26 03:04 UTC - now; currently used; from: [0x681FCc4272c14f70203Ea655B1EAF9A20557a473](https://etherscan.io/address/0x681FCc4272c14f70203Ea655B1EAF9A20557a473); to: [0x00AAa63A0Af768749A569DfdA5FEad3438091ba1](https://etherscan.io/address/0x00AAa63A0Af768749A569DfdA5FEad3438091ba1) #### State updates - functionCall: 2026-10-26 03:04 UTC - now; currently used; address: [0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3); selector: 0x82ecf2f6; signature: `function create(uint32 _gameType, bytes32 _rootClaim, bytes _extraData) payable returns (address proxy_)` ## Milestones & Incidents - 2026-10-26: [Whitechain migrates to an Ethereum L2](https://docs.whitechain.io/learn/network/mainnet). The legacy Whitechain PoA chain becomes an OP Stack rollup, keeping WBT as gas token. ## Risk summary **Warning:** The fault proof system is deployed but is not functional. The respected game type is the super permissioned game, which runs no VM and exposes no challenger, bond or challenge clock, so no dispute can be resolved by execution. Security relies entirely on the permissioned proposer, with the Guardian able to blacklist games and change the respected game type. ### Funds can be stolen if 1. the LiquidityController owner releases WBT from the NativeAssetLiquidity reserve without a matching deposit on another chain, 2. a contract receives a malicious code upgrade. There is no delay on code upgrades (CRITICAL). ### MEV can be extracted if 3. the operator exploits their centralized position and frontruns user transactions. ## Risk analysis **Warning:** The fault proof system is deployed but is not functional. The respected game type is the super permissioned game, which runs no VM and exposes no challenger, bond or challenge clock, so no dispute can be resolved by execution. Security relies entirely on the permissioned proposer, with the Guardian able to blacklist games and change the respected game type. ### 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 None (sentiment: bad) State roots are proposed as super roots by a permissioned proposer. The respected game type exposes no challenger, VM or challenge clock, so proposals cannot be disputed by execution. Validity is governed by the AnchorStateRegistry, and the Guardian can blacklist games and change the respected game type. ### 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 window for users to exit in case of an unwanted upgrade since contracts are instantly upgradable. ### Proposer failure Cannot withdraw (sentiment: bad) Only the whitelisted proposers can publish state roots on L1, so in the event of failure the withdrawals are frozen. ## Stage Whitechain is not even a Stage 0 project. **Warning:** The requirement for available node software is under review ### Stage 0 1 issue needs fixing. - Met: A complete and functional proof system is deployed. - 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. - Under review: 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. - Issue: Fraud proof submission is not sufficiently decentralized. ### Stage 1 3 issues need fixing. **Principle** - Issue: Compromising ≥75% of the Security Council should be 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** - Issue: Users' withdrawals can be censored by the permissioned operators. - Issue: Upgrades executed by actors with more centralized control than a Security Council provide less than 7d for users to exit if the permissioned operator is down or censoring. ### Stage 2 3 issues need fixing. - Issue: Fraud proof submission is open only to whitelisted actors. - 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/0x00AAa63A0Af768749A569DfdA5FEad3438091ba1#code) - [OptimismPortal2.sol - source code, depositTransaction function](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) Learn more about the DA layer here: [Ethereum](https://l2beat.com/projects/ethereum) ## State validation State roots are proposed as super roots by a permissioned proposer. The respected game type is the super permissioned game, which carries no bond and exposes no challenge mechanics: validity is governed by the AnchorStateRegistry, and the Guardian can blacklist games and change the respected game type. ### State root proposals Only the permissioned proposer configured in the dispute game factory can create games of the respected type. Each proposal commits to a super root anchored to an L2 timestamp rather than an L2 block number. ## 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: 8 - Last upgrade: 8d 21h ago - Avg upgrade interval: 4d 10h - 2026-10-26 03:04 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) - 2026-10-26 03:04 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) - 2026-10-26 03:04 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) - 2026-10-26 03:04 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) - 2026-10-26 03:04 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) - 2026-10-26 03:04 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) - 2026-10-26 03:04 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) - 2026-10-26 03:04 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) - 2026-10-26 03:03 UTC, deployment of [SuperchainConfig](https://etherscan.io/address/0x35aB61eE5D1C2319d1822A7bE1b6B3FaE98AD886#code): transaction [0xc981e11bcf62c90f2a9d2f6bce7b064c1a3f296114dac5106a50f3a4552f587a](https://etherscan.io/tx/0xc981e11bcf62c90f2a9d2f6bce7b064c1a3f296114dac5106a50f3a4552f587a), implementations: [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) ## Updates Each date links the update on the HTML page, which also shows its contract diffs. ### [2026-10-28 13:02 UTC](https://l2beat.com/layer2s/projects/whitechain?update=488ff7a1) (17 changes) Initial discovery of Whitechain, an OP Stack L2 on op-contracts v8.0.0 (Upgrade 20) with the custom gas token feature enabled and the super permissioned game (type 5) respected. ## 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 respected game type carries no on-chain challenge process, so settlement waits only for the delays above. 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) ### Migrated gas token and external bridge The custom gas token feature is enabled on the SystemConfig, so the OptimismPortal accepts no ETH and WBT has no canonical representation on Ethereum. The WBT balances of the legacy chain were copied into the L2 genesis, together with a reserve held by the NativeAssetLiquidity predeploy. The reserve can only be released through the LiquidityController predeploy, whose owner is the L2 alias of the L1 ProxyAdmin owner. Assets move between Ethereum, Tron and Whitechain mostly through the Portal, a bridge operated by Whitechain in which a single relayer key authorizes every release and an operator multisig can withdraw the pooled liquidity. **Risks** - Funds can be stolen if the LiquidityController owner releases WBT from the NativeAssetLiquidity reserve without a matching deposit on another chain. **References** - [Migration to L2 - Whitechain docs](https://docs.whitechain.io/learn/general/migration) - [Portal bridge - Whitechain docs](https://docs.whitechain.io/build/bridge/portal-bridge) ## Permissions Explore these contracts and permissions in Disco, L2BEAT's contract explorer: https://disco.l2beat.com/ui/p/whitechain ### Ethereum #### Actors ##### Whitechain Multisig 1 Addresses: [0x568440132075d4E1c3E42111EF561636f4956eAd](https://etherscan.io/address/0x568440132075d4E1c3E42111EF561636f4956eAd) A Multisig with 3/5 threshold. - Can upgrade **with no delay** - OptimismPortal2 [via: ProxyAdmin] - OptimismMintableERC20Factory [via: ProxyAdmin] - SystemConfig [via: ProxyAdmin] - DisputeGameFactory [via: ProxyAdmin] - SuperchainConfig [via: ProxyAdmin] - L1CrossDomainMessenger [via: ProxyAdmin] - L1ERC721Bridge [via: ProxyAdmin] - L1StandardBridge [via: ProxyAdmin] - AnchorStateRegistry [via: ProxyAdmin] - DelayedWETH [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] Participants (5): [0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa](https://etherscan.io/address/0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa), [0x0523613f224AB0cfe18eE9c647E0AB154794E435](https://etherscan.io/address/0x0523613f224AB0cfe18eE9c647E0AB154794E435), [0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE](https://etherscan.io/address/0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE), [0x0F1709011314648dF65f37c9E0faaAA630679B68](https://etherscan.io/address/0x0F1709011314648dF65f37c9E0faaAA630679B68), [0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C](https://etherscan.io/address/0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C) ##### Whitechain Multisig 2 Addresses: [0x8da4Ce0f49E472fb6F892c779b3E63C7a55B23aF](https://etherscan.io/address/0x8da4Ce0f49E472fb6F892c779b3E63C7a55B23aF) 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): [0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa](https://etherscan.io/address/0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa), [0x0523613f224AB0cfe18eE9c647E0AB154794E435](https://etherscan.io/address/0x0523613f224AB0cfe18eE9c647E0AB154794E435), [0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE](https://etherscan.io/address/0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE), [0x0F1709011314648dF65f37c9E0faaAA630679B68](https://etherscan.io/address/0x0F1709011314648dF65f37c9E0faaAA630679B68), [0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C](https://etherscan.io/address/0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C) ##### Whitechain Multisig 3 Addresses: [0x5918870d5391e0610d7624837cABEd9d4AbEeeE0](https://etherscan.io/address/0x5918870d5391e0610d7624837cABEd9d4AbEeeE0) A Multisig with 3/5 threshold. - 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) Participants (5): [0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa](https://etherscan.io/address/0xd6Bfb97ddE9b0238C6915E42801cbc9eEA726bDa), [0x0523613f224AB0cfe18eE9c647E0AB154794E435](https://etherscan.io/address/0x0523613f224AB0cfe18eE9c647E0AB154794E435), [0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE](https://etherscan.io/address/0x2DDfDB5cC9542A1870b68B2e71cD03560E5B05CE), [0x0F1709011314648dF65f37c9E0faaAA630679B68](https://etherscan.io/address/0x0F1709011314648dF65f37c9E0faaAA630679B68), [0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C](https://etherscan.io/address/0x2E5350ea36b9889C2DaC2211b9Aa7bF94b7aAc6C) ##### EOA 1 Addresses: [0x077843C51bC1c464899879F77fa02B98ee5A00d9](https://etherscan.io/address/0x077843C51bC1c464899879F77fa02B98ee5A00d9) - Can interact with DisputeGameFactory - Allowed to post new state roots of the current layer to the host chain ##### EOA 2 Addresses: [0x681FCc4272c14f70203Ea655B1EAF9A20557a473](https://etherscan.io/address/0x681FCc4272c14f70203Ea655B1EAF9A20557a473) - Can interact with SystemConfig - Allowed to commit transactions from the current layer to the host chain ## Smart contracts ![A diagram of the smart contract architecture](https://l2beat.com/static/images/architecture/opstack-rollup-superchain-opfp.b21f58d7.png) Explore these contracts and permissions in Disco, L2BEAT's contract explorer: https://disco.l2beat.com/ui/p/whitechain ### Ethereum #### OptimismPortal2 (escrow) Addresses: [0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code), [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x1005217ad392DC64CEf501FA1777A27D42166748)) - 2026-10-26 03:04 UTC, upgrade of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x1005217ad392DC64CEf501FA1777A27D42166748/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [OptimismPortal2](https://etherscan.io/address/0x0665f74e013b7FCcfDa6dAF8951bAf3C982a3864#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x1005217ad392DC64CEf501FA1777A27D42166748](https://etherscan.io/address/0x1005217ad392DC64CEf501FA1777A27D42166748#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 SuperPermissionedDisputeGame. - Roles: - **admin**: ProxyAdmin; ultimately Whitechain Multisig 1 The following tokens are included in the value secured calculation: ETH Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#OptimismPortal2) #### SystemConfig Addresses: [0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code), [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA)) - 2026-10-26 03:04 UTC, upgrade of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x670b850A235A6fA98cD7a195eB139D0277E471fA/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [SystemConfig](https://etherscan.io/address/0x1D761826ad3098D10f6dDfbd143957Aaf2b6e50C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x670b850A235A6fA98cD7a195eB139D0277E471fA](https://etherscan.io/address/0x670b850A235A6fA98cD7a195eB139D0277E471fA#code) Contains configuration parameters such as the Sequencer address, gas limit on this chain and the unsafe block signer address. - Roles: - **admin**: ProxyAdmin; ultimately Whitechain Multisig 1 - **batcherHash**: EOA 2 - **owner**: Whitechain Multisig 2 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#SystemConfig) #### DisputeGameFactory Addresses: [0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code), [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b)) - 2026-10-26 03:04 UTC, upgrade of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x72B971717E088B59F26d4236BE222ADB6ACD393b/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [DisputeGameFactory](https://etherscan.io/address/0x1De4f415Dc5bF6e458Cf32d13452c24A35Ec90e3#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x72B971717E088B59F26d4236BE222ADB6ACD393b](https://etherscan.io/address/0x72B971717E088B59F26d4236BE222ADB6ACD393b#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 Whitechain Multisig 1 - **game5Proposer**: EOA 1 - **owner**: Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) #### SuperchainConfig Addresses: [0x35aB61eE5D1C2319d1822A7bE1b6B3FaE98AD886](https://etherscan.io/address/0x35aB61eE5D1C2319d1822A7bE1b6B3FaE98AD886#code), [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) (Implementation (Upgradable)), [0x0390F00fD57E771Afa19630B4ad8CE68ddA73506](https://etherscan.io/address/0x0390F00fD57E771Afa19630B4ad8CE68ddA73506#code) (Admin) **Past upgrades** (Count of upgrades: No upgrades, Last upgrade: N/A, Avg upgrade interval: N/A) - 2026-10-26 03:03 UTC, deployment of [SuperchainConfig](https://etherscan.io/address/0x35aB61eE5D1C2319d1822A7bE1b6B3FaE98AD886#code): transaction [0xc981e11bcf62c90f2a9d2f6bce7b064c1a3f296114dac5106a50f3a4552f587a](https://etherscan.io/tx/0xc981e11bcf62c90f2a9d2f6bce7b064c1a3f296114dac5106a50f3a4552f587a), implementations: [0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504](https://etherscan.io/address/0x5570b1f2b97B1E35b5C6f9Ee76f6cf02c9917504#code) This is NOT the shared SuperchainConfig contract of the OP stack Superchain but rather a local fork. It manages 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 3mo 1d if left untouched. - Roles: - **admin**: ProxyAdmin; ultimately Whitechain Multisig 1 - **guardian**: Whitechain Multisig 3 Can be upgraded by: Whitechain Multisig 1 with no delay Implementation 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#SuperchainConfig), [World Chain](https://l2beat.com/layer2s/projects/world#SuperchainConfig) #### L1CrossDomainMessenger Addresses: [0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code), [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0)) - 2026-10-26 03:04 UTC, upgrade of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x59D497530b00062f40950ba8EaB88868bf7F86f0/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [L1CrossDomainMessenger](https://etherscan.io/address/0x589cD6dEd71Cf4867351E86507A1Ce81Bde0Bc9C#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x59D497530b00062f40950ba8EaB88868bf7F86f0](https://etherscan.io/address/0x59D497530b00062f40950ba8EaB88868bf7F86f0#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 Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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: [0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code), [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e)) - 2026-10-26 03:04 UTC, upgrade of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [L1ERC721Bridge](https://etherscan.io/address/0x7b854CBa91d3B788bc311e2326E203C0f46dB3Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e](https://etherscan.io/address/0x9F164f1d02A81e06D639E55F65a87f0070E3Cb2e#code) Used to bridge ERC-721 tokens from host chain to this chain. - Roles: - **admin**: ProxyAdmin; ultimately Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) #### L1StandardBridge (escrow) Addresses: [0x7e954f20F24b7988EA966C4E7880fe6D21dCc2D9](https://etherscan.io/address/0x7e954f20F24b7988EA966C4E7880fe6D21dCc2D9#code), [0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891](https://etherscan.io/address/0xB37a11AadF167B2F0b8dD85372De4bC66CD4A891#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) The main entry point to deposit ERC20 tokens from host chain to this chain. - Roles: - **admin**: ProxyAdmin; ultimately Whitechain Multisig 1 All supported tokens in this escrow are included in the value secured calculation. Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) #### ProxyAdmin (2 instances) Addresses: [0x0390F00fD57E771Afa19630B4ad8CE68ddA73506](https://etherscan.io/address/0x0390F00fD57E771Afa19630B4ad8CE68ddA73506#code), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) - Roles: - **owner**: Whitechain Multisig 1 #### OptimismMintableERC20Factory Addresses: [0x149a093e8Fe94610586e068739E929723Ac0Cd1A](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code), [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12)) - 2026-10-26 03:04 UTC, upgrade of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [OptimismMintableERC20Factory](https://etherscan.io/address/0x149a093e8Fe94610586e068739E929723Ac0Cd1A#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12](https://etherscan.io/address/0xaAbEA75Da509fA518Fd8a91Eae4BE5813B829b12#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 Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) #### 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#SuperPermissionedDisputeGame) #### AnchorStateRegistry Addresses: [0x860801a7766859B82b0B572f75a56d4D3903B23a](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code), [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281)) - 2026-10-26 03:04 UTC, upgrade of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0x8F40Cc98D694AB986F026C5383A181FCc9B6B281/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [AnchorStateRegistry](https://etherscan.io/address/0x860801a7766859B82b0B572f75a56d4D3903B23a#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x8F40Cc98D694AB986F026C5383A181FCc9B6B281](https://etherscan.io/address/0x8F40Cc98D694AB986F026C5383A181FCc9B6B281#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 Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) #### DelayedWETH Addresses: [0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code), [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) (Implementation (Upgradable)), [0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7](https://etherscan.io/address/0x9419a57179dEF1FBdb8e7859756e85ad0ae396c7#code) (Admin) **Past upgrades** (Count of upgrades: 3, Last upgrade: 8d 21h ago, Avg upgrade interval: 2d 5h) - 2026-10-26 03:04 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0xE440CC08A71694C8229323803F59024E3144630e](https://etherscan.io/address/0xE440CC08A71694C8229323803F59024E3144630e#code) ([diff](https://disco.l2beat.com/diff/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8/eth:0xE440CC08A71694C8229323803F59024E3144630e)) - 2026-10-26 03:04 UTC, upgrade of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), implementations: [0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8](https://etherscan.io/address/0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8#code) ([diff](https://disco.l2beat.com/diff/eth:0xE440CC08A71694C8229323803F59024E3144630e/eth:0x2476c911E6D4D9411E677D8Faf15a64ac1fDEEe8)) - 2026-10-26 03:04 UTC, deployment of [DelayedWETH](https://etherscan.io/address/0x99BbebAea69666405A8e19dF5d185fecC6BF46Fe#code): transaction [0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd](https://etherscan.io/tx/0x88a0adce6fd5fd03dc7e07960d5a72fc7b4c662d254ee383bb6e28c0c21092bd), 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 Whitechain Multisig 1 Can be upgraded by: Whitechain Multisig 1 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), [Unichain](https://l2beat.com/layer2s/projects/unichain#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) The current deployment carries some associated risks: - Funds can be stolen if a contract receives a malicious code upgrade. There is no delay on code upgrades (CRITICAL).