Contract Addresses - Base Documentation

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L2 Contract Addresses
Base Mainnet
Base Testnet (Sepolia)
L1 Contract Addresses
Ethereum Mainnet
Ethereum Testnet (Sepolia)
Base Admin Addresses
Base Mainnet
Base Testnet (Sepolia)

L2 Contract Addresses

Base Mainnet

Name	Address
WETH9	0x4200000000000000000000000000000000000006
L2CrossDomainMessenger	0x4200000000000000000000000000000000000007
L2StandardBridge	0x4200000000000000000000000000000000000010
SequencerFeeVault	0x4200000000000000000000000000000000000011
OptimismMintableERC20Factory	0xF10122D428B4bc8A9d050D06a2037259b4c4B83B
GasPriceOracle	0x420000000000000000000000000000000000000F
L1Block	0x4200000000000000000000000000000000000015
L2ToL1MessagePasser	0x4200000000000000000000000000000000000016
L2ERC721Bridge	0x4200000000000000000000000000000000000014
OptimismMintableERC721Factory	0x4200000000000000000000000000000000000017
ProxyAdmin	0x4200000000000000000000000000000000000018
BaseFeeVault	0x4200000000000000000000000000000000000019
L1FeeVault	0x420000000000000000000000000000000000001a
EAS	0x4200000000000000000000000000000000000021
EASSchemaRegistry	0x4200000000000000000000000000000000000020
LegacyERC20ETH	0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000

Base Testnet (Sepolia)

Name	Address
WETH9	0x4200000000000000000000000000000000000006
L2CrossDomainMessenger	0x4200000000000000000000000000000000000007
L2StandardBridge	0x4200000000000000000000000000000000000010
SequencerFeeVault	0x4200000000000000000000000000000000000011
OptimismMintableERC20Factory	0x4200000000000000000000000000000000000012
GasPriceOracle	0x420000000000000000000000000000000000000F
L1Block	0x4200000000000000000000000000000000000015
L2ToL1MessagePasser	0x4200000000000000000000000000000000000016
L2ERC721Bridge	0x4200000000000000000000000000000000000014
OptimismMintableERC721Factory	0x4200000000000000000000000000000000000017
ProxyAdmin	0x4200000000000000000000000000000000000018
BaseFeeVault	0x4200000000000000000000000000000000000019
L1FeeVault	0x420000000000000000000000000000000000001a
EAS	0x4200000000000000000000000000000000000021
EASSchemaRegistry	0x4200000000000000000000000000000000000020
LegacyERC20ETH	0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000

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

L1 Contract Addresses

Ethereum Mainnet

Name	Address
AddressManager	0x8EfB6B5c4767B09Dc9AA6Af4eAA89F749522BaE2
AnchorStateRegistryProxy	0x496286e5eE7758de84Dd17e6d2d97afC2ACE4cc7
DelayedWETHProxy (FDG)	0xa2f2aC6F5aF72e494A227d79Db20473Cf7A1FFE8
DelayedWETHProxy (PDG)	0x3E8a0B63f57e975c268d610ece93da5f78c01321
DisputeGameFactoryProxy	0x43edB88C4B80fDD2AdFF2412A7BebF9dF42cB40e
FaultDisputeGame	0xAB91FB6cef84199145133f75cBD96B8a31F184ED
L1CrossDomainMessenger	0x866E82a600A1414e583f7F13623F1aC5d58b0Afa
L1ERC721Bridge	0x608d94945A64503E642E6370Ec598e519a2C1E53
L1StandardBridge	0x3154Cf16ccdb4C6d922629664174b904d80F2C35
MIPS	0xF027F4A985560fb13324e943edf55ad6F1d15Dc1
OptimismMintableERC20Factory	0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84
OptimismPortal	0x49048044D57e1C92A77f79988d21Fa8fAF74E97e
PermissionedDisputeGame	0x7344Da3A618b86cdA67f8260C0cc2027D99F5B49
PreimageOracle	0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3
ProxyAdmin	0x0475cBCAebd9CE8AfA5025828d5b98DFb67E059E
SystemConfig	0x73a79Fab69143498Ed3712e519A88a918e1f4072
SystemDictator	0x1fE3fdd1F0193Dd657C0a9AAC37314D6B479E557

Unneeded contract addresses Certain contracts are mandatory according to the OP Stack SDK, despite not being utilized. For such contracts, you can simply assign the zero address:

StateCommitmentChain
CanonicalTransactionChain
BondManager

Ethereum Testnet (Sepolia)

Name	Address
AddressManager	0x709c2B8ef4A9feFc629A8a2C1AF424Dc5BD6ad1B
AnchorStateRegistryProxy	0x0729957c92A1F50590A84cb2D65D761093f3f8eB
DelayedWETHProxy (FDG)	0x489c2E5ebe0037bDb2DC039C5770757b8E54eA1F
DelayedWETHProxy (PDG)	0x27A6128F707de3d99F89Bf09c35a4e0753E1B808
DisputeGameFactoryProxy	0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1
FaultDisputeGame	0xcfce7dd673fbbbffd16ab936b7245a2f2db31c9a
L1CrossDomainMessenger	0xC34855F4De64F1840e5686e64278da901e261f20
L1ERC721Bridge	0x21eFD066e581FA55Ef105170Cc04d74386a09190
L1StandardBridge	0xfd0Bf71F60660E2f608ed56e1659C450eB113120
L2OutputOracle	0x84457ca9D0163FbC4bbfe4Dfbb20ba46e48DF254
MIPS	0xF027F4A985560fb13324e943edf55ad6F1d15Dc1
OptimismMintableERC20Factory	0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37
OptimismPortal	0x49f53e41452C74589E85cA1677426Ba426459e85
PermissionedDisputeGame	0xf0102ffe22649a5421d53acc96e309660960cf44
PreimageOracle	0x1fb8cdFc6831fc866Ed9C51aF8817Da5c287aDD3
ProxyAdmin	0x0389E59Aa0a41E4A413Ae70f0008e76CAA34b1F3
SystemConfig	0xf272670eb55e895584501d564AfEB048bEd26194

Base Admin Addresses

Base Mainnet

Admin Role	Address	Type of Key
Batch Sender	0x5050f69a9786f081509234f1a7f4684b5e5b76c9	EOA managed by Coinbase Technologies
Batch Inbox	0xff00000000000000000000000000000000008453	EOA (with no known private key)
Output Proposer	0x642229f238fb9de03374be34b0ed8d9de80752c5	EOA managed by Coinbase Technologies
Proxy Admin Owner (L1)	0x7bB41C3008B3f03FE483B28b8DB90e19Cf07595c	Gnosis Safe
Challenger	0x8Ca1E12404d16373Aef756179B185F27b2994F3a	EOA managed by Coinbase Technologies
System config owner	0x14536667Cd30e52C0b458BaACcB9faDA7046E056	Gnosis Safe
Guardian	0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2	Gnosis Safe

Base Testnet (Sepolia)

Admin Role	Address	Type of Key
Batch Sender	0x6CDEbe940BC0F26850285cacA097C11c33103E47	EOA managed by Coinbase Technologies
Batch Inbox	0xff00000000000000000000000000000000084532	EOA (with no known private key)
Output Proposer	0x037637067c1DbE6d2430616d8f54Cb774Daa5999	EOA managed by Coinbase Technologies
Proxy Admin Owner (L1)	0x0fe884546476dDd290eC46318785046ef68a0BA9	Gnosis Safe
Challenger	0x8b8c52B04A38f10515C52670fcb23f3C4C44474F	EOA managed by Coinbase Technologies
System config owner	0x0fe884546476dDd290eC46318785046ef68a0BA9	Gnosis Safe
Guardian	0xA9FF930151130fd19DA1F03E5077AFB7C78F8503	EOA managed by Coinbase Technologies

Bridge Tokens to Base Network Fees