Tier 1 encapsulates everything that is not in Tier 0. In other words, Tier 1 has mainnet contracts associated with all products not in Tier 0 that are deployed by Coinbase. Below, we provide a list of contracts in this tier, which is not meant to be exhaustive.

Base AppChains

Asset	Chain	Description	Contracts
DeployChain		Preinstall deployment factory for creating chains. Manages chain initialization with precompiled contracts.	`0xe8c6D9460Ce61D260260d27f30bde8b8d1a8341e`
SuperchainConfig		Configuration contract for Superchain deployments. Controls global superchain settings and parameters.	`0xc5b0B126fFD9D36084af85359a07Fb798A405aDc`

Basenames

Asset	Chain	Description	Contracts
OpenEdition721Mint		ERC721 NFT minting contract for open edition collections. Enables unlimited minting of digital collectibles.	`0x75D2eA122cC20B6e661775Ac18ffF0B4547B9fe6`
EARegistrarController		ENS domain registration controller for Early Access users. Handles discounted domain registrations for qualifying addresses.	`0xd3e6775Ed9B7dC12B205C8E608Dc3767B9e5eFdA`
L2Resolver		ENS resolver for Base usernames with CCIP-read support. Manages name resolution and record storage for .base.eth domains.	`0xC6d566A56A1aFf6508b41f6c90ff131615583BCD`
RegistrarController		Main domain registration and renewal controller. Handles pricing, discounts, and domain lifecycle management.	`0x4cCb0BB02FCABA27e82a56646E81d8c5bC4119a5`
CB1DiscountValidator		Validates eligibility for CB1 holder discounts. Checks ownership of Coinbase One NFTs for domain registration discounts.	`0x9de4Ab12320684cec803Edb72aA3a920250d392C`
BaseETHDiscountValidator		Validates ETH-based discount eligibility on Base. Checks ETH balance thresholds for domain registration discounts.	`0x55564490a44FDC2aEEa54B60eB1c79F124FD88b9`
CBIdDiscountValidator		Validates Coinbase ID verification for discounts. Checks verified Coinbase account status for domain pricing benefits.	`0x0A484e560946818787135EAD632771589523dE82`
VADiscountValidator		Validates early access discount eligibility. Manages whitelist-based domain registration discounts for qualifying users.	`0x012076854d030128dc72B34621287Bb585210315`
BNSDiscountValidator		Validates eligibility for Basename NFT holder discounts. Checks ownership of early Basename NFTs for registration benefits.	`0x20b433c640DFb8c2e3C6aBB0533314b2d7B9f2FF`
OCSNFTDiscountValidator		Validates discounts for OnChain Summer NFT holders. Checks ownership of qualifying OnChain Summer NFTs for domain discounts.	`0x55246A2AE466257B2fB54d4BB881Fb3f17D8e03e`
EAExponentialPremiumPriceOracle		Early Access pricing oracle with exponential premium decay. Implements launch pricing with time-based premium reduction.	`0x46114792Cc08Baf79006f25Ec9eE23AC64e119ca`
ExponentialPremiumPriceOracle		Standard pricing oracle with exponential premium decay. Calculates domain prices with time-based premium reduction after expiry.	`0x508CFE43aa84b8048cB6d39037cE0dc96d8aDc75`
BaseRegistrar		Core domain registration and ownership management contract. ERC721-based registrar for .base.eth domain ownership and transfers.	`0x03c4738Ee98aE44591e1A4A4F3CaB6641d95DD9a`
EaMerkleDiscountValidator		Early Access merkle proof discount validator. Validates whitelist eligibility using merkle tree proofs for domain discounts.	`0x6E89d99643DB1223697C77A9F8B2Cb07E898e743`
ReverseRegistrar		Manages reverse ENS lookups for addresses. Allows setting primary names for addresses for reverse resolution.	`0x79EA96012eEa67A83431F1701B3dFf7e37F9E282`
DevfolioDiscountValidator		Validates discounts for Devfolio platform users. Checks eligibility for developer-focused domain registration discounts.	`0xB635802085b405A9C8BA7225ae866f60b63d8503`
LaunchAuctionPriceOracle		Auction-based pricing oracle for launch phase. Implements Dutch auction pricing for premium domain name launches.	`0xd53B558e1F07289acedf028d226974AbBa258312`
Registry		Core ENS registry for .base.eth domains. Central registry managing domain ownership and resolver assignments.	`0xB94704422c2a1E396835A571837Aa5AE53285a95`
L1Resolver		Layer 1 ENS resolver for cross-chain resolution. Handles ENS resolution queries on Ethereum for Base domains.	`0xde9049636F4a1dfE0a64d1bFe3155C0A14C54F31`
L1Resolver		Layer 1 ENS resolver for cross-chain resolution. Handles ENS resolution queries on Ethereum for Base domains.	`0x480F8F2FfE823Dc70F499Cc2542C42a3a6aD3f20`

Coinbase Attestations

Asset	Chain	Description	Contracts
EAS		Ethereum Attestation Service for creating on-chain attestations. Enables verifiable claims and credentials infrastructure.	`0x4200000000000000000000000000000000000021`
SchemaRegistry		Registry for managing attestation schemas and templates. Defines structure for different types of attestations.	`0x4200000000000000000000000000000000000020`
CoinbaseIndexer		Coinbase indexing service for attestation data aggregation. Provides efficient querying and discovery of attestations.	`0x2c7eE1E5f416dfF40054c27A62f7B357C4E8619C`
CoinbaseAttester		Official Coinbase attestation authority and issuer. Creates and validates Coinbase-backed attestations.	`0x357458739F90461b99789350868CD7CF330Dd7EE`
CoinbaseResolver		Resolver for processing and validating Coinbase attestations. Handles attestation verification and resolution logic.	`0xD867CbEd445c37b0F95Cc956fe6B539BdEf7F32f`

Coinbase Smart Wallet infrastructure

Asset	Chain	Description	Contracts
CoinbaseSmartWalletValidator		Validator contract for Coinbase Smart Wallet transactions. Provides signature verification and security validation.	`0x79A33f950b90C7d07E66950daedf868BD0cDcF96`
			`0x79A33f950b90C7d07E66950daedf868BD0cDcF96`
			`0x79A33f950b90C7d07E66950daedf868BD0cDcF96`
			`0x79A33f950b90C7d07E66950daedf868BD0cDcF96`
DefaultReceiver		Default fallback receiver for smart wallet transactions. Handles ETH and token transfers when no specific handler exists.	`0x2a8010A9D71D2a5AEA19D040F8b4797789A194a9`
			`0x2a8010A9D71D2a5AEA19D040F8b4797789A194a9`
			`0x2a8010A9D71D2a5AEA19D040F8b4797789A194a9`
			`0x2a8010A9D71D2a5AEA19D040F8b4797789A194a9`
MagicSpend		ERC-4337 paymaster contract with gasless transaction support. Enables sponsored transactions and flexible payment methods.	`0x736b661a643B57F11d131CB3Ae6129C22ea02843`
			`0xe1D39a19Af4319eBA972fd70A5280CA0aE7cA0AC`
			`0xF7F64baDcbf64A1DbcAE29C223BE1387F8a301A0`
			`0x485B2544745786FA2dD95B8C239f6CB3a63D198d`
			`0xa5b50A9ed69811aFA07151b3B98b8F6B58C5c28A`
			`0x325A4Af669032B6b1296C3084f8070D04F9AD581`
			`0xd27D5277215754dc84C8e0736D8fef2Ed39d92F3`
			`0x53899E2B6C6202C5Eb4F229DA1294F17A0C3876e`
			`0x7d334106dAa009Ef62CBd34C1624Bee2277bA735`
			`0xfb1A43620c648A43eEE7bc112db5F2498e619DC5`
			`0x1d3F02EF7D6881C5018863d740c026639aC7fa41`
			`0xbd25CE451C24554f53D984b8C64B7A0aBC5FDbB5`
			`0x5c77CF220dFA3dBBB052D9b4934E61d69cb393a5`
TokenFactory		Factory contract for creating and deploying new tokens. Simplifies token creation with standard templates.	`0x0000C479718a45e3D80b9A71C17b2E954CfA1515`
SmartWalletFactory		Factory contract for deploying Coinbase Smart Wallets. Handles wallet creation and initialization logic.	`0x0BA5ED0c6AA8c49038F819E587E2633c4A9F428a`
VerifyingPaymaster V7		Latest version of verifying paymaster with enhanced security. Validates transactions before sponsoring gas fees.	`0x2FAEB0760D4230Ef2aC21496Bb4F0b47D634FD4c`
VerifyingPaymaster V6		Previous version of verifying paymaster for compatibility. Legacy gas sponsorship with basic verification.	`0xa270ef92c1E11f1C1f95753C2E56801e8125fA83`

Coinbase's validator staking infrastructure

Asset	Chain	Description	Contracts
BatchDeposit		Batch staking deposit contract for efficiency. Allows multiple validator deposits in single transaction.	`0x8eBda19DdEE719DAB78DEf3e22c3d37970e35217`

Commerce Payments

Asset	Chain	Description	Contracts
AuthCaptureEscrow		Authorized payment capture and escrow management. Securely holds payments pending authorization.	`0xBdEA0D1bcC5966192B070Fdf62aB4EF5b4420cff`
ERC3009PaymentCollector		ERC-3009 compliant payment collection contract. Handles gasless payments using transferWithAuthorization.	`0x0E3dF9510de65469C4518D7843919c0b8C7A7757`
Permit2PaymentCollector		Uniswap Permit2 compatible payment collector. Enables gasless token transfers with signature-based permits.	`0x992476B9Ee81d52a5BdA0622C333938D0Af0aB26`
PreApprovalPaymentCollector		Pre-approved payment collection contract. Collects payments from pre-authorized token allowances.	`0x1b77ABd71FCD21fbe2398AE821Aa27D1E6B94bC6`
SpendPermissionPaymentCollector		Spend permission-based payment collector. Manages payments through spend permission authorization.	`0x8d9F34934dc9619e5DC3Df27D0A40b4A744E7eAa`
OperatorRefundCollector		Operator refund collection and processing contract. Handles automated refunds for failed payment operations.	`0x934907bffd0901b6A21e398B9C53A4A38F02fa5d`

DEX Aggregator

Asset	Chain	Description	Contracts
ZeroExProxy		0x Protocol proxy contract for DEX aggregation. Routes trades through multiple decentralized exchanges.	`0x564d6e3A879c007183fAd17beD9A70630F090651`
ZeroExProxy		0x Protocol proxy contract for DEX aggregation. Routes trades through multiple decentralized exchanges.	`0x29ef818a2A9d182Fa9A9D27d61881a239fa03E4B`

EIP-7702

Asset	Chain	Description	Contracts
EIP7702Proxy		EIP-7702 account abstraction proxy implementation. Enables externally owned accounts to delegate to smart contracts.	`0x7702cb554e6bFb442cb743A7dF23154544a7176C`
EIP7702Proxy			`0x7702cb554e6bFb442cb743A7dF23154544a7176C`
NonceTracker		Nonce tracking for EIP-7702 implementations. Manages transaction nonces for account abstraction.	`0xD0Ff13c28679FDd75Bc09c0a430a0089bf8b95a8`
			`0xD0Ff13c28679FDd75Bc09c0a430a0089bf8b95a8`
			`0xD0Ff13c28679FDd75Bc09c0a430a0089bf8b95a8`
			`0xD0Ff13c28679FDd75Bc09c0a430a0089bf8b95a8`

Spend Permissions

Asset	Chain	Description	Contracts
SpendPermissionManager		Manages spending permissions for delegated transfers. Enables secure authorization of spending limits and approvals.	`0xf85210B21cC50302F477BA56686d2019dC9b67Ad`
PublicERC6492Validator		ERC-6492 signature validation for smart contract wallets. Validates signatures for undeployed contracts and counterfactual addresses.	`0xcfCE48B757601F3f351CB6f434CB0517aEEE293D`
SpendPermissionManager		Manages spending permissions for delegated transfers. Enables secure authorization of spending limits and approvals.	`0xf85210B21cC50302F477BA56686d2019dC9b67Ad`
PublicERC6492Validator		ERC-6492 signature validation for smart contract wallets. Validates signatures for undeployed contracts and counterfactual addresses.	`0xcfCE48B757601F3f351CB6f434CB0517aEEE293D`
SpendPermissionManager		Manages spending permissions for delegated transfers. Enables secure authorization of spending limits and approvals.	`0xf85210B21cC50302F477BA56686d2019dC9b67Ad`
PublicERC6492Validator		ERC-6492 signature validation for smart contract wallets. Validates signatures for undeployed contracts and counterfactual addresses.	`0xcfCE48B757601F3f351CB6f434CB0517aEEE293D`
SpendPermissionManager		Manages spending permissions for delegated transfers. Enables secure authorization of spending limits and approvals.	`0xf85210B21cC50302F477BA56686d2019dC9b67Ad`
PublicERC6492Validator		ERC-6492 signature validation for smart contract wallets. Validates signatures for undeployed contracts and counterfactual addresses.	`0xcfCE48B757601F3f351CB6f434CB0517aEEE293D`
SpendPermissionManager		Manages spending permissions for delegated transfers. Enables secure authorization of spending limits and approvals.	`0xf85210B21cC50302F477BA56686d2019dC9b67Ad`
PublicERC6492Validator		ERC-6492 signature validation for smart contract wallets. Validates signatures for undeployed contracts and counterfactual addresses.	`0xcfCE48B757601F3f351CB6f434CB0517aEEE293D`

Verified Pools

Asset	Chain	Description	Contracts
SignatureChecker		Signature verification for pool operations. Validates signatures for authorized pool interactions.	`0x2D04d1743BaB35B13841A466788479c591E01381`
VerifiedPoolsBasicHook		Basic hook implementation for verified pools. Provides customizable pool behavior and validation logic.	`0x5cd525c621AFCa515Bf58631D4733fbA7B72Aae4`
VerifiedPoolsPositionManager		Position management for verified liquidity pools. Handles liquidity positions and fee collection for verified pools.	`0x043ac8DBd2F0e932800210260f207806650C6145`
VerifiedPoolsPositionDescriptor		NFT descriptor for verified pool positions. Generates metadata and visuals for liquidity position NFTs.	`0x0705717527934a1E10e5328A0B92462c8eB1A28F`
RemoveLiquidityPolicy		Policy contract for liquidity removal operations. Enforces rules and restrictions for withdrawing liquidity.	`0x071fF6D93895c8E6537C572a6D40CF47c36aBed7`
BasicPolicy		Basic policy implementation for pool operations. Defines standard rules for verified pool interactions.	`0xcC7fE2Cf5B79F3EFaBF42caC8E223813242E1454`

Wrapped Token (ADA)

Asset	Chain	Description	Contracts
coinbase wrapped ada Mint Forwarder		Mint forwarder for Coinbase wrapped Cardano (cbADA). Manages cross-chain minting and burning of wrapped ADA tokens.	`0x8c44C6a9ee7e64a65F288714d1Bb8043Cf0f3C5C`
coinbase wrapped ada		Coinbase wrapped Cardano token (cbADA). ERC20 representation of ADA bridged to Base network.	`0xcbADA732173e39521CDBE8bf59a6Dc85A9fc7b8c`

Wrapped Token (DOGE)

Asset	Chain	Description	Contracts
coinbase wrapped doge Mint Forwarder		Mint forwarder for Coinbase wrapped Dogecoin (cbDOGE). Manages cross-chain minting and burning of wrapped DOGE tokens.	`0x0549899a89e661044f9E7a1B76A157d407D85163`
coinbase wrapped doge		Coinbase wrapped Dogecoin token (cbDOGE). ERC20 representation of DOGE bridged to Base network.	`0xcbD06E5A2B0C65597161de254AA074E489dEb510`

Wrapped Token (LTC)

Asset	Chain	Description	Contracts
coinbase wrapped ltc Mint Forwarder		Mint forwarder for Coinbase wrapped Litecoin (cbLTC). Manages cross-chain minting and burning of wrapped LTC tokens.	`0x423077A24c3019E3A291bE2D29a34A4D97AA2DeD`
coinbase wrapped ltc		Coinbase wrapped Litecoin token (cbLTC). ERC20 representation of LTC bridged to Base network.	`0xcb17C9Db87B595717C857a08468793f5bAb6445F`

Wrapped Token (XRP)

Asset	Chain	Description	Contracts
coinbase wrapped xrp Mint Forwarder		Mint forwarder for Coinbase wrapped XRP (cbXRP). Manages cross-chain minting and burning of wrapped XRP tokens.	`0x2ebDCFaCCB0c3B6039Dd8C7c30bF633ACE8c268C`
coinbase wrapped xrp		Coinbase wrapped XRP token (cbXRP). ERC20 representation of XRP bridged to Base network.	`0xcb585250f852C6c6bf90434AB21A00f02833a4af`

Wrapped Tokens

Asset	Chain	Description	Contracts
TokenFactory		Factory contract for deploying wrapped token contracts. Creates standardized ERC20 tokens for cross-chain asset bridging.	`0x0000D340e876e1De249CcA0FD91d91aE612741E8`
			`0x00003f0f758054D91430AFC79b8666fbA06ccB2c`
			`0x0000955334545d3c2bdECE50C7F3877054F4dCF7`
			`0x000036624A21E2047D28449989A943c64b5210d0`
			`0x00005721895c940fe1066B147358cE6d31A31378`
			`0x0000B216f5011f882604D2cFa295A83d77025727`
			`0x0000DfcD0263aC062b3fC7A17aBd1f0407f389A6`
			`0x00000000001c3dC9A681A014e2732bF1419aFAec`
			`0x00000000001c3dC9A681A014e2732bF1419aFAec`
MintForwarderFactory		Factory for deploying mint forwarder contracts. Creates proxy contracts that manage minting permissions and operations.	`0x000054fCEAB4632B9c8B7fd20cE9790352426716`
			`0x0000FF0b7Fdf0449c0761356680c0516fD76c0f5`
			`0x0000F4E1b81A88A7b1732a4A5FdfaA4999F45075`
			`0x00001962896d81F18Bca192a2Bc90f85b5478698`
			`0x0000Bfaa45AA7352D7A5b151D34f4EFc096E9Cf6`
			`0x0000Efa3D0485d3E0B6A48adE0d61a59451f648f`
			`0x00002027199E51Ce5648E56F0F003759e3D7b16e`
			`0x0000c1c5F00bD1843b6c1703eA1F457a2Bb5c457`
			`0x0000000000E552550beC95A36217A91CeBA099b0`
			`0x0000000000E552550beC95A36217A91CeBA099b0`
BatchBlacklister		Batch blacklisting of addresses on FiatToken contracts. Efficiently blacklists multiple addresses in a single transaction.	`0x20F25adf31BD5Ed53367293C6926bF1AdfC7Ea54`
			`0x76D62719c6A7766c8478B46f995E99AD4675d86a`
			`0x17165086067fc58a04CB8E9dA5B6917B6f23f109`
			`0xA9A4408db72F168c5b0bf413b369824450517126`
			`0x4d5b3aca5968f7075F023d2A7AA830358C3c2b48`
			`0xE3111D45733Efee14bFB1EbE2364D929eDBd9059`
			`0xadab385DFD0bB2c21E292c5F586471a2878A101e`
			`0x0C8B7E98b39aA7983D2444661805a628E8A041DB`
			`0xF903f3A8B30a7b645e76DB8511b4121cc96160EB`
			`0xF903f3A8B30a7b645e76DB8511b4121cc96160EB`
BatchBlacklisterV2		Enhanced batch blacklisting with additional features. Improved version with optimized gas usage and extended functionality.	`0xa0BF66C54002cEb15aB6E8423EebB994E8b2f7FE`
			`0xE34Fd8e02815125aB0947434e42978a8A4e70906`
			`0x63d7212C0503b04BdC2BCCe90fe26800859F2f81`
MintFactoryFree		Free tier factory for token minting operations. No-fee deployment option for basic mintable token contracts.	`0x5da05215acA9eDBE27CBDCE86888986E4b4c996F`
MintFactory		Factory contract for deploying mintable token contracts. Manages creation and configuration of custom ERC20 tokens with minting capabilities.	`0x20e26eD291B85A44A6Eb9b0D336512b53fd93092`
MintFactory			`0x560aa3207ae4b516A5489E04f2Fa2e2808CEa896`
MintFactoryCreator		Meta-factory for creating MintFactory instances. Deploys and manages multiple mint factory contracts with custom configurations.	`0xAeb73b6C8ed3776EA6b9284082588c55E35e1b27`
MintFactoryCreator			`0x52d443855E4d15dc47d323fA94e7d92342d3Eb57`

Liqufi

Asset	Chain	Description	Contracts
WeightedTokenVestingLockup		Token vesting contract with weighted release schedules. Supports time-based and milestone-based unlocking.	`0xb7486B5bd2d14714950B082EafebE9822a1d96eE`
			`0xaa861940DD2ED2fE4a3108E51f7f117bb6798E65`
			`0xB487A8739AA114178C5aA5608eF1D2fc26D17A9e`
			`0x2A06274c976C4db9CbaF702B559E0B5765D07b0d`
			`0x9efea6f63d583624E5a459D680D3A27Adf6C570d`
			`0x16879Ca809e8CA2783d89C2Ee830671A8C348230`
WeightedTokenVestingLockupFactory		Factory contract for deploying WeightedTokenVestingLockup instances. Streamlines creation of new vesting schedules.	`0x341251e680fB0FD4f47aD4dC1AD61C3bE5142d0e`
			`0xD42eA6a51ec16c0Cb581695343F9F3d652d98945`
			`0x5bFd3bDFf68346909d352757055e98f2654a3c10`
			`0x08c1820bA6A0B88eB1f3E3eC7C9B8cf85E63C6FC`
			`0xc7284314593e952717b6a0b78766887b37fb1720`
			`0x85F2A6BB58E52c9189fD8748790C5059508FBDc1`
WeightedVestingModule		Modular vesting component with customizable weight parameters. Enables complex vesting logic integration.	`0xc76B81D835A6Ef88fb9b841C22Ed492473577aC3`
			`0xF3D74Bc4E97aD56DDcB0576629c360fB40A871e2`
			`0x3065aa025a27B42B98E43a5fF7B3965c0174D1bD`
			`0xD85d9Cd1E453AeE54e448Cef4941F0718922a672`
			`0xcc93eb838F061A375A37d0d65E8D68f15e9D07E5`
			`0x595db8eCa8d64f28A57D5F240204FDc8AdbCb8c7`
			`0x848E9743b6D0aC5614f6427d94fEd295Fe393b6d`
VestingModuleRegistry		Central registry for managing and discovering vesting modules. Enables governance and upgrade capabilities.	`0x782F402C93E9b0d931197cD727e006356B55699d`
			`0x6A46c2411e6FD9205D44b82C5B32B2Db7C150263`
			`0x208F9c3Ca561977ee49AB84E2243c1531a265bd1`
			`0xE57499B85448582a0bFd486283a0a023581D2778`
			`0x674A3Ab5d2be0dA09bF1662E1f9827bdDA3d103F`
			`0x00F849ca595cFa7CeCd052E77e9d152618333E8E`
			`0xC34c1643c4C2488315Dc709FCB5ABc6b4E3dE6C7`
BatchPayments		Efficient batch payment processor for multiple recipients. Reduces gas costs for bulk token distributions.	`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
			`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
			`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
			`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
			`0x834297cAF503d9455395A62336e653FCf2234962`
			`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
			`0x39C4B71D53Db0B6B647fe5013608eeA292db4A73`
WeightedTokenVesting (v1)		Legacy v1 token vesting contract with basic functionality. Superseded by newer lockup versions.	`0x674A3Ab5d2be0dA09bF1662E1f9827bdDA3d103F`
WeightedTokenVestingFactory (v1)		Legacy v1 factory for creating basic vesting contracts. Superseded by newer factory versions.	`0x834297cAF503d9455395A62336e653FCf2234962`

Opportunities

Mento-V3

High Signal. Comprehensive bug coverage.