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Contract Addresses

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
L1CrossDomainMessenger	0x866E82a600A1414e583f7F13623F1aC5d58b0Afa
L1ERC721Bridge	0x608d94945A64503E642E6370Ec598e519a2C1E53
L1StandardBridge	0x3154Cf16ccdb4C6d922629664174b904d80F2C35
L2OutputOracle	0x56315b90c40730925ec5485cf004d835058518A0
OptimismMintableERC20Factory	0x05cc379EBD9B30BbA19C6fA282AB29218EC61D84
OptimismPortal	0x49048044D57e1C92A77f79988d21Fa8fAF74E97e
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	0x4C8BA32A5DAC2A720bb35CeDB51D6B067D104205
DelayedWETHProxy	0x7698b262B7a534912c8366dD8a531672deEC634e
DisputeGameFactoryProxy	0xd6E6dBf4F7EA0ac412fD8b65ED297e64BB7a06E1
FaultDisputeGame	0x48F9F3190b7B5231cBf2aD1A1315AF7f6A554020
L1CrossDomainMessenger	0xC34855F4De64F1840e5686e64278da901e261f20
L1ERC721Bridge	0x21eFD066e581FA55Ef105170Cc04d74386a09190
L1StandardBridge	0xfd0Bf71F60660E2f608ed56e1659C450eB113120
L2OutputOracle	0x84457ca9D0163FbC4bbfe4Dfbb20ba46e48DF254
MIPS	0xFF760A87E41144b336E29b6D4582427dEBdB6dee
OptimismMintableERC20Factory	0xb1efB9650aD6d0CC1ed3Ac4a0B7f1D5732696D37
OptimismPortal	0x49f53e41452C74589E85cA1677426Ba426459e85
PermissionedDisputeGame	0x54966d5A42a812D0dAaDe1FA2321FF8b102d1ee1
PreimageOracle	0x627F825CBd48c4102d36f287be71f4234426b9e4
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	2-of-2 Nested Gnosis Safe (signers below)
L1 Nested Safe Signer (Coinbase)	0x9855054731540A48b28990B63DcF4f33d8AE46A1	Gnosis Safe
L1 Nested Safe Signer (Optimism)	0x9BA6e03D8B90dE867373Db8cF1A58d2F7F006b3A	Gnosis Safe
Proxy Admin Owner (L2)	0x2304cb33d95999dc29f4cef1e35065e670a70050	2-of-2 Nested Gnosis Safe (signers below)
L2 Nested Safe Signer (Coinbase)	0xd94e416cf2c7167608b2515b7e4102b41efff94f	Gnosis Safe
L2 Nested Safe Signer (Optimism)	0x28EDB11394eb271212ED66c08f2b7893C04C5D65	Gnosis Safe
Challenger	0x6f8c5ba3f59ea3e76300e3becdc231d656017824	1-of-2 Smart contract
System config owner	0x14536667Cd30e52C0b458BaACcB9faDA7046E056	Gnosis Safe
Guardian	0x14536667Cd30e52C0b458BaACcB9faDA7046E056	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	0x20044a0d104E9e788A0C984A2B7eAe615afD046b	EOA managed by Coinbase Technologies
Proxy Admin Owner (L1)	0x0fe884546476dDd290eC46318785046ef68a0BA9	Gnosis Safe
Proxy Admin Owner (L2)	0x20f984546476ddd290ec46318785046ef68a1cba	Gnosis Safe
Challenger	0xDa3037Ff70Ac92CD867c683BD807e5A484857405	EOA managed by Coinbase Technologies
System config owner	0x0fe884546476dDd290eC46318785046ef68a0BA9	Gnosis Safe
Guardian	0xA9FF930151130fd19DA1F03E5077AFB7C78F8503	EOA managed by Coinbase Technologies

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