> ## Documentation Index
> Fetch the complete documentation index at: https://base-a060aa97-eb-mini-app-ia-overhaul.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Contract Addresses

> A comprehensive list of L2 contract addresses for Base Mainnet and Base Testnet, including links to their respective blockchain explorers.

## L2 Contract Addresses

### Base Mainnet

| Name                          | Address                                                                                                               |
| :---------------------------- | :-------------------------------------------------------------------------------------------------------------------- |
| WETH9                         | [0x4200000000000000000000000000000000000006](https://basescan.org/address/0x4200000000000000000000000000000000000006) |
| L2CrossDomainMessenger        | [0x4200000000000000000000000000000000000007](https://basescan.org/address/0x4200000000000000000000000000000000000007) |
| L2StandardBridge              | [0x4200000000000000000000000000000000000010](https://basescan.org/address/0x4200000000000000000000000000000000000010) |
| SequencerFeeVault             | [0x4200000000000000000000000000000000000011](https://basescan.org/address/0x4200000000000000000000000000000000000011) |
| OptimismMintableERC20Factory  | [0xF10122D428B4bc8A9d050D06a2037259b4c4B83B](https://basescan.org/address/0xF10122D428B4bc8A9d050D06a2037259b4c4B83B) |
| GasPriceOracle                | [0x420000000000000000000000000000000000000F](https://basescan.org/address/0x420000000000000000000000000000000000000F) |
| L1Block                       | [0x4200000000000000000000000000000000000015](https://basescan.org/address/0x4200000000000000000000000000000000000015) |
| L2ToL1MessagePasser           | [0x4200000000000000000000000000000000000016](https://basescan.org/address/0x4200000000000000000000000000000000000016) |
| L2ERC721Bridge                | [0x4200000000000000000000000000000000000014](https://basescan.org/address/0x4200000000000000000000000000000000000014) |
| OptimismMintableERC721Factory | [0x4200000000000000000000000000000000000017](https://basescan.org/address/0x4200000000000000000000000000000000000017) |
| ProxyAdmin                    | [0x4200000000000000000000000000000000000018](https://basescan.org/address/0x4200000000000000000000000000000000000018) |
| BaseFeeVault                  | [0x4200000000000000000000000000000000000019](https://basescan.org/address/0x4200000000000000000000000000000000000019) |
| L1FeeVault                    | [0x420000000000000000000000000000000000001a](https://basescan.org/address/0x420000000000000000000000000000000000001a) |
| EAS                           | [0x4200000000000000000000000000000000000021](https://basescan.org/address/0x4200000000000000000000000000000000000021) |
| EASSchemaRegistry             | [0x4200000000000000000000000000000000000020](https://basescan.org/address/0x4200000000000000000000000000000000000020) |
| LegacyERC20ETH                | [0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000](https://basescan.org/address/0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000) |

### Base Testnet (Sepolia)

| Name                          | Address                                                                                                                       |
| :---------------------------- | :---------------------------------------------------------------------------------------------------------------------------- |
| WETH9                         | [0x4200000000000000000000000000000000000006](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000006) |
| L2CrossDomainMessenger        | [0x4200000000000000000000000000000000000007](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000007) |
| L2StandardBridge              | [0x4200000000000000000000000000000000000010](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000010) |
| SequencerFeeVault             | [0x4200000000000000000000000000000000000011](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000011) |
| OptimismMintableERC20Factory  | [0x4200000000000000000000000000000000000012](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000012) |
| GasPriceOracle                | [0x420000000000000000000000000000000000000F](https://sepolia.basescan.org/address/0x420000000000000000000000000000000000000F) |
| L1Block                       | [0x4200000000000000000000000000000000000015](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000015) |
| L2ToL1MessagePasser           | [0x4200000000000000000000000000000000000016](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000016) |
| L2ERC721Bridge                | [0x4200000000000000000000000000000000000014](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000014) |
| OptimismMintableERC721Factory | [0x4200000000000000000000000000000000000017](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000017) |
| ProxyAdmin                    | [0x4200000000000000000000000000000000000018](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000018) |
| BaseFeeVault                  | [0x4200000000000000000000000000000000000019](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000019) |
| L1FeeVault                    | [0x420000000000000000000000000000000000001a](https://sepolia.basescan.org/address/0x420000000000000000000000000000000000001a) |
| EAS                           | [0x4200000000000000000000000000000000000021](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000021) |
| EASSchemaRegistry             | [0x4200000000000000000000000000000000000020](https://sepolia.basescan.org/address/0x4200000000000000000000000000000000000020) |
| LegacyERC20ETH                | [0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000](https://sepolia.basescan.org/address/0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000) |

\**L2 contract addresses are the same on both mainnet and testnet.*

## L1 Contract Addresses

### Ethereum Mainnet

| Name                         | Address                                                                                                               |
| :--------------------------- | :-------------------------------------------------------------------------------------------------------------------- |
| AddressManager               | [0x8EfB6B5c4767B09Dc9AA6Af4eAA89F749522BaE2](https://etherscan.io/address/0x8EfB6B5c4767B09Dc9AA6Af4eAA89F749522BaE2) |
| AnchorStateRegistryProxy     | [0x496286e5eE7758de84Dd17e6d2d97afC2ACE4cc7](https://etherscan.io/address/0x496286e5eE7758de84Dd17e6d2d97afC2ACE4cc7) |
| DelayedWETHProxy (FDG)       | [0xa2f2aC6F5aF72e494A227d79Db20473Cf7A1FFE8](https://etherscan.io/address/0xa2f2aC6F5aF72e494A227d79Db20473Cf7A1FFE8) |
| DelayedWETHProxy (PDG)       | [0x3E8a0B63f57e975c268d610ece93da5f78c01321](https://etherscan.io/address/0x3E8a0B63f57e975c268d610ece93da5f78c01321) |
| DisputeGameFactoryProxy      | [0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e](https://etherscan.io/address/0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e) |
| FaultDisputeGame             | [0xAB91FB6cef84199145133f75cBD96B8a31F184ED](https://etherscan.io/address/0xAB91FB6cef84199145133f75cBD96B8a31F184ED) |
| L1CrossDomainMessenger       | [0x866E82a600A1414e583f7F13623F1aC5d58b0Afa](https://etherscan.io/address/0x866E82a600A1414e583f7F13623F1aC5d58b0Afa) |
| L1ERC721Bridge               | [0x608d94945A64503E642E6370Ec598e519a2C1E53](https://etherscan.io/address/0x608d94945A64503E642E6370Ec598e519a2C1E53) |
| L1StandardBridge             | [0x3154Cf16ccdb4C6d922629664174b904d80F2C35](https://etherscan.io/address/0x3154Cf16ccdb4C6d922629664174b904d80F2C35) |
| MIPS                         | [0xF027F4A985560fb13324e943edf55ad6F1d15Dc1](https://etherscan.io/address/0xF027F4A985560fb13324e943edf55ad6F1d15Dc1) |
| OptimismMintableERC20Factory | [0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84](https://etherscan.io/address/0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84) |
| OptimismPortal               | [0x49048044D57e1C92A77f79988d21Fa8fAF74E97e](https://etherscan.io/address/0x49048044D57e1C92A77f79988d21Fa8fAF74E97e) |
| PermissionedDisputeGame      | [0x7344Da3A618b86cdA67f8260C0cc2027D99F5B49](https://etherscan.io/address/0x7344Da3A618b86cdA67f8260C0cc2027D99F5B49) |
| PreimageOracle               | [0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3](https://etherscan.io/address/0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3) |
| ProxyAdmin                   | [0x0475cBCAebd9CE8AfA5025828d5b98DFb67E059E](https://etherscan.io/address/0x0475cBCAebd9CE8AfA5025828d5b98DFb67E059E) |
| SystemConfig                 | [0x73a79Fab69143498Ed3712e519A88a918e1f4072](https://etherscan.io/address/0x73a79Fab69143498Ed3712e519A88a918e1f4072) |
| SystemDictator               | [0x1fE3fdd1F0193Dd657C0a9AAC37314D6B479E557](https://etherscan.io/address/0x1fE3fdd1F0193Dd657C0a9AAC37314D6B479E557) |

**Unneeded contract addresses**

Certain contracts are mandatory according to the [OP Stack SDK](https://stack.optimism.io/docs/build/sdk/#unneeded-contract-addresses), despite not being utilized. For such contracts, you can simply assign the zero address:

* `StateCommitmentChain`
* `CanonicalTransactionChain`
* `BondManager`

### Ethereum Testnet (Sepolia)

| Name                         | Address                                                                                                                       |
| :--------------------------- | :---------------------------------------------------------------------------------------------------------------------------- |
| AddressManager               | [0x709c2B8ef4A9feFc629A8a2C1AF424Dc5BD6ad1B](https://sepolia.etherscan.io/address/0x709c2B8ef4A9feFc629A8a2C1AF424Dc5BD6ad1B) |
| AnchorStateRegistryProxy     | [0x0729957c92A1F50590A84cb2D65D761093f3f8eB](https://sepolia.etherscan.io/address/0x0729957c92A1F50590A84cb2D65D761093f3f8eB) |
| DelayedWETHProxy (FDG)       | [0x489c2E5ebe0037bDb2DC039C5770757b8E54eA1F](https://sepolia.etherscan.io/address/0x489c2E5ebe0037bDb2DC039C5770757b8E54eA1F) |
| DelayedWETHProxy (PDG)       | [0x27A6128F707de3d99F89Bf09c35a4e0753E1B808](https://sepolia.etherscan.io/address/0x27A6128F707de3d99F89Bf09c35a4e0753E1B808) |
| DisputeGameFactoryProxy      | [0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1](https://sepolia.etherscan.io/address/0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1) |
| FaultDisputeGame             | [0xcfce7dd673fbbbffd16ab936b7245a2f2db31c9a](https://sepolia.etherscan.io/address/0xcfce7dd673fbbbffd16ab936b7245a2f2db31c9a) |
| L1CrossDomainMessenger       | [0xC34855F4De64F1840e5686e64278da901e261f20](https://sepolia.etherscan.io/address/0xC34855F4De64F1840e5686e64278da901e261f20) |
| L1ERC721Bridge               | [0x21eFD066e581FA55Ef105170Cc04d74386a09190](https://sepolia.etherscan.io/address/0x21eFD066e581FA55Ef105170Cc04d74386a09190) |
| L1StandardBridge             | [0xfd0Bf71F60660E2f608ed56e1659C450eB113120](https://sepolia.etherscan.io/address/0xfd0Bf71F60660E2f608ed56e1659C450eB113120) |
| L2OutputOracle               | [0x84457ca9D0163FbC4bbfe4Dfbb20ba46e48DF254](https://sepolia.etherscan.io/address/0x84457ca9D0163FbC4bbfe4Dfbb20ba46e48DF254) |
| MIPS                         | [0xF027F4A985560fb13324e943edf55ad6F1d15Dc1](https://sepolia.etherscan.io/address/0xF027F4A985560fb13324e943edf55ad6F1d15Dc1) |
| OptimismMintableERC20Factory | [0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37](https://sepolia.etherscan.io/address/0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37) |
| OptimismPortal               | [0x49f53e41452C74589E85cA1677426Ba426459e85](https://sepolia.etherscan.io/address/0x49f53e41452C74589E85cA1677426Ba426459e85) |
| PermissionedDisputeGame      | [0xf0102ffe22649a5421d53acc96e309660960cf44](https://sepolia.etherscan.io/address/0xf0102ffe22649a5421d53acc96e309660960cf44) |
| PreimageOracle               | [0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3](https://sepolia.etherscan.io/address/0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3) |
| ProxyAdmin                   | [0x0389E59Aa0a41E4A413Ae70f0008e76CAA34b1F3](https://sepolia.etherscan.io/address/0x0389E59Aa0a41E4A413Ae70f0008e76CAA34b1F3) |
| SystemConfig                 | [0xf272670eb55e895584501d564AfEB048bEd26194](https://sepolia.etherscan.io/address/0xf272670eb55e895584501d564AfEB048bEd26194) |

## Base Admin Addresses

### Base Mainnet

| Admin Role             | Address                                                                                                               | Type of Key                          |
| :--------------------- | :-------------------------------------------------------------------------------------------------------------------- | :----------------------------------- |
| Batch Sender           | [0x5050f69a9786f081509234f1a7f4684b5e5b76c9](https://etherscan.io/address/0x5050f69a9786f081509234f1a7f4684b5e5b76c9) | EOA managed by Coinbase Technologies |
| Batch Inbox            | [0xff00000000000000000000000000000000008453](https://etherscan.io/address/0xff00000000000000000000000000000000008453) | EOA (with no known private key)      |
| Output Proposer        | [0x642229f238fb9de03374be34b0ed8d9de80752c5](https://etherscan.io/address/0x642229f238fb9de03374be34b0ed8d9de80752c5) | EOA managed by Coinbase Technologies |
| Proxy Admin Owner (L1) | [0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c](https://etherscan.io/address/0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c) | Gnosis Safe                          |
| Challenger             | [0x8Ca1E12404d16373Aef756179B185F27b2994F3a](https://etherscan.io/address/0x8Ca1E12404d16373Aef756179B185F27b2994F3a) | EOA managed by Coinbase Technologies |
| System config owner    | [0x14536667Cd30e52C0b458BaACcB9faDA7046E056](https://etherscan.io/address/0x14536667Cd30e52C0b458BaACcB9faDA7046E056) | Gnosis Safe                          |
| Guardian               | [0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2](https://etherscan.io/address/0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2) | Gnosis Safe                          |

### Base Testnet (Sepolia)

| Admin Role             | Address                                                                                                                       | Type of Key                          |
| :--------------------- | :---------------------------------------------------------------------------------------------------------------------------- | :----------------------------------- |
| Batch Sender           | [0x6CDEbe940BC0F26850285cacA097C11c33103E47](https://sepolia.etherscan.io/address/0x6CDEbe940BC0F26850285cacA097C11c33103E47) | EOA managed by Coinbase Technologies |
| Batch Inbox            | [0xff00000000000000000000000000000000084532](https://sepolia.etherscan.io/address/0xff00000000000000000000000000000000084532) | EOA (with no known private key)      |
| Output Proposer        | [0x037637067c1DbE6d2430616d8f54Cb774Daa5999](https://sepolia.etherscan.io/address/0x037637067c1DbE6d2430616d8f54Cb774Daa5999) | EOA managed by Coinbase Technologies |
| Proxy Admin Owner (L1) | [0x0fe884546476dDd290eC46318785046ef68a0BA9](https://sepolia.etherscan.io/address/0x0fe884546476dDd290eC46318785046ef68a0BA9) | Gnosis Safe                          |
| Challenger             | [0x8b8c52B04A38f10515C52670fcb23f3C4C44474F](https://sepolia.etherscan.io/address/0x8b8c52B04A38f10515C52670fcb23f3C4C44474F) | EOA managed by Coinbase Technologies |
| System config owner    | [0x0fe884546476dDd290eC46318785046ef68a0BA9](https://sepolia.etherscan.io/address/0x0fe884546476dDd290eC46318785046ef68a0BA9) | Gnosis Safe                          |
| Guardian               | [0xA9FF930151130fd19DA1F03E5077AFB7C78F8503](https://sepolia.etherscan.io/address/0xA9FF930151130fd19DA1F03E5077AFB7C78F8503) | EOA managed by Coinbase Technologies |