> ## Documentation Index
> Fetch the complete documentation index at: https://docs.base.org/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     | [0x909f6cf47ed12f010A796527f562bFc26C7F4E72](https://etherscan.io/address/0x909f6cf47ed12f010A796527f562bFc26C7F4E72) |
| DelayedWETHProxy (FDG)       | [0x2453c1216e49704d84ea98a4dacd95738f2fc8ec](https://etherscan.io/address/0x2453c1216e49704d84ea98a4dacd95738f2fc8ec) |
| DelayedWETHProxy (PDG)       | [0x64ae5250958cdeb83f6b61f913b5ac6ebe8efd4d](https://etherscan.io/address/0x64ae5250958cdeb83f6b61f913b5ac6ebe8efd4d) |
| DisputeGameFactoryProxy      | [0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e](https://etherscan.io/address/0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e) |
| FaultDisputeGame             | [0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499](https://etherscan.io/address/0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499) |
| FaultDisputeGame (Kona)      | [0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499](https://etherscan.io/address/0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499) |
| L1CrossDomainMessenger       | [0x866E82a600A1414e583f7F13623F1aC5d58b0Afa](https://etherscan.io/address/0x866E82a600A1414e583f7F13623F1aC5d58b0Afa) |
| L1ERC721Bridge               | [0x608d94945A64503E642E6370Ec598e519a2C1E53](https://etherscan.io/address/0x608d94945A64503E642E6370Ec598e519a2C1E53) |
| L1StandardBridge             | [0x3154Cf16ccdb4C6d922629664174b904d80F2C35](https://etherscan.io/address/0x3154Cf16ccdb4C6d922629664174b904d80F2C35) |
| MIPS                         | [0x6463dEE3828677F6270d83d45408044fc5eDB908](https://etherscan.io/address/0x6463dEE3828677F6270d83d45408044fc5eDB908) |
| OptimismMintableERC20Factory | [0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84](https://etherscan.io/address/0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84) |
| OptimismPortal               | [0x49048044D57e1C92A77f79988d21Fa8fAF74E97e](https://etherscan.io/address/0x49048044D57e1C92A77f79988d21Fa8fAF74E97e) |
| PermissionedDisputeGame      | [0x58bf355C5d4EdFc723eF89d99582ECCfd143266A](https://etherscan.io/address/0x58bf355C5d4EdFc723eF89d99582ECCfd143266A) |
| 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) |
| AggregateVerifier (Multiproof) | [0x498313fB340CD5055c5568546364008299A47517](https://sepolia.etherscan.io/address/0x498313fB340CD5055c5568546364008299A47517) |
| AnchorStateRegistryProxy       | [0x2fF5cC82dBf333Ea30D8ee462178ab1707315355](https://sepolia.etherscan.io/address/0x2fF5cC82dBf333Ea30D8ee462178ab1707315355) |
| DelayedWETHProxy (FDG)         | [0xd3683e4947A7769603Ab6418eC02f000CE3cF30b](https://sepolia.etherscan.io/address/0xd3683e4947A7769603Ab6418eC02f000CE3cF30b) |
| DelayedWETHProxy (Multiproof)  | [0xD6e2d9D4f1f8865AC983eE848983fb1979429914](https://sepolia.etherscan.io/address/0xD6e2d9D4f1f8865AC983eE848983fb1979429914) |
| DelayedWETHProxy (PDG)         | [0x32cE910d9C6c8F78dc6779c1499aB05F281A054e](https://sepolia.etherscan.io/address/0x32cE910d9C6c8F78dc6779c1499aB05F281A054e) |
| DisputeGameFactoryProxy        | [0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1](https://sepolia.etherscan.io/address/0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1) |
| FaultDisputeGame               | [0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499](https://sepolia.etherscan.io/address/0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499) |
| FaultDisputeGame (Kona)        | [0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499](https://sepolia.etherscan.io/address/0x6dDBa09bc4cCB0D6Ca9Fc5350580f74165707499) |
| L1CrossDomainMessenger         | [0xC34855F4De64F1840e5686e64278da901e261f20](https://sepolia.etherscan.io/address/0xC34855F4De64F1840e5686e64278da901e261f20) |
| L1ERC721Bridge                 | [0x21eFD066e581FA55Ef105170Cc04d74386a09190](https://sepolia.etherscan.io/address/0x21eFD066e581FA55Ef105170Cc04d74386a09190) |
| L1StandardBridge               | [0xfd0Bf71F60660E2f608ed56e1659C450eB113120](https://sepolia.etherscan.io/address/0xfd0Bf71F60660E2f608ed56e1659C450eB113120) |
| MIPS                           | [0x6463dEE3828677F6270d83d45408044fc5eDB908](https://sepolia.etherscan.io/address/0x6463dEE3828677F6270d83d45408044fc5eDB908) |
| NitroEnclaveVerifier           | [0x7D8EA07DB94128DBEe66bAfa3eBAa9668B413d72](https://sepolia.etherscan.io/address/0x7D8EA07DB94128DBEe66bAfa3eBAa9668B413d72) |
| OptimismMintableERC20Factory   | [0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37](https://sepolia.etherscan.io/address/0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37) |
| OptimismPortal                 | [0x49f53e41452C74589E85cA1677426Ba426459e85](https://sepolia.etherscan.io/address/0x49f53e41452C74589E85cA1677426Ba426459e85) |
| PermissionedDisputeGame        | [0x58bf355C5d4EdFc723eF89d99582ECCfd143266A](https://sepolia.etherscan.io/address/0x58bf355C5d4EdFc723eF89d99582ECCfd143266A) |
| PreimageOracle                 | [0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3](https://sepolia.etherscan.io/address/0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3) |
| ProxyAdmin                     | [0x0389E59Aa0a41E4A413Ae70f0008e76CAA34b1F3](https://sepolia.etherscan.io/address/0x0389E59Aa0a41E4A413Ae70f0008e76CAA34b1F3) |
| SystemConfig                   | [0xf272670eb55e895584501d564AfEB048bEd26194](https://sepolia.etherscan.io/address/0xf272670eb55e895584501d564AfEB048bEd26194) |
| TEEProverRegistryProxy         | [0xf0d7E15673fBA052e83d7f2b26BB6071E86b972e](https://sepolia.etherscan.io/address/0xf0d7E15673fBA052e83d7f2b26BB6071E86b972e) |
| TEEVerifier                    | [0x92F6dD3501E51B8b20C77b959becaaebeB210e17](https://sepolia.etherscan.io/address/0x92F6dD3501E51B8b20C77b959becaaebeB210e17) |

## 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 |
| SystemConfig 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        | [0xdb84125f2f4229c81c579f41bc129c71b174eb58](https://sepolia.etherscan.io/address/0xdb84125f2f4229c81c579f41bc129c71b174eb58) | EOA managed by Coinbase Technologies |
| Proxy Admin Owner (L1) | [0x0fe884546476dDd290eC46318785046ef68a0BA9](https://sepolia.etherscan.io/address/0x0fe884546476dDd290eC46318785046ef68a0BA9) | Gnosis Safe                          |
| Challenger             | [0xadc09b63a3ac57a2ce86d946617a18df9db029a1](https://sepolia.etherscan.io/address/0xadc09b63a3ac57a2ce86d946617a18df9db029a1) | EOA managed by Coinbase Technologies |
| SystemConfig owner     | [0x5dfEB066334B67355A15dc9b67317fD2a2e1f77f](https://sepolia.etherscan.io/address/0x5dfEB066334B67355A15dc9b67317fD2a2e1f77f) | Gnosis Safe                          |
| Guardian               | [0x7a50f00e8D05b95F98fE38d8BeE366a7324dCf7E](https://sepolia.etherscan.io/address/0x7a50f00e8D05b95F98fE38d8BeE366a7324dCf7E) | EOA managed by Coinbase Technologies |