> For the complete documentation index, see [llms.txt](https://docs.lumio.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lumio.io/start-building/lumio-on-optimism-testnet/network-information/contracts.md).

# Contracts

The contracts currently relate to the OP stack, as described here. All of them are for the EVM. For the Move VM, certain contracts (such as bridges) will be implemented at a later stage.

### Testnet (Sepolia)

#### L2 addresses

| Contract                      | Address                                    |
| ----------------------------- | ------------------------------------------ |
| L2CrossDomainMessenger        | 0x4200000000000000000000000000000000000007 |
| L2StandardBridge              | 0x4200000000000000000000000000000000000010 |
| SequencerFeeVault             | 0x4200000000000000000000000000000000000011 |
| OptimismMintableERC20Factory  | 0x4200000000000000000000000000000000000012 |
| GasPriceOracle                | 0x420000000000000000000000000000000000000F |
| L1Block                       | 0x4200000000000000000000000000000000000015 |
| L2ToL1MessagePasser           | 0x4200000000000000000000000000000000000016 |
| L2ERC721Bridge                | 0x4200000000000000000000000000000000000014 |
| OptimismMintableERC721Factory | 0x4200000000000000000000000000000000000017 |
| L2ERC721Bridge                | 0x4200000000000000000000000000000000000014 |
| ProxyAdmin                    | 0x4200000000000000000000000000000000000018 |
| BaseFeeVault                  | 0x4200000000000000000000000000000000000019 |
| L1FeeVault                    | 0x420000000000000000000000000000000000001a |
| EAS                           | 0x4200000000000000000000000000000000000021 |
| EASSchemaRegistry             | 0x4200000000000000000000000000000000000020 |
| WETH9                         | 0x4200000000000000000000000000000000000006 |

#### L1 addresses

| Contract                     | Address                                    |
| ---------------------------- | ------------------------------------------ |
| AddressManager               | 0x354E7c391F0665ba48afE4F41a789D0A7b2EeB51 |
| L1CrossDomainMessenger       | 0xAAeCAF9E8b590b6d6bccBB73A2d3E9A5e41e275a |
| L1ERC721Bridge               | 0xDEb8D50bbAD470A552664D12A0914b3DB913B76b |
| L1StandardBridge             | 0x8BEa1cDccA49435B76292c34563d49F38cae355e |
| L2OutputOracle               | 0x2d9acF190c9c77EcC51A8141e12b5C53cFB786F2 |
| OptimismMintableERC20Factory | 0xb10AB31Bf6416db6513a2BC207bC4Bc1bbdC4A75 |
| OptimismPortal               | 0xB62dFdFd325859dFe8e686FBDBb38Dc995a8C42A |
| ProxyAdmin                   | 0x2D781D5C3AE257EeE89ABD9613b5e90E3f44dB28 |
| SystemConfig                 | 0xaa38Cd51C4911d9eC12eef2dd7c6a5136c663358 |