Protocol
Contract Addresses
The canonical registry of TAG IT deployments. Everything below is live on Base Sepolia (chainId 84532) and verified on BaseScan. Where a contract is upgradeable, the address listed is the UUPS proxy — the address you should integrate against.
| Network parameter | Value |
|---|---|
| Network | Base Sepolia (testnet) |
| Chain ID | 84532 |
| Public RPC | https://sepolia.base.org |
| Explorer | https://sepolia.basescan.org |
Core protocol
The asset lifecycle, BIDGES access control, recovery, and gas sponsorship — the contracts documented in Smart Contracts.
| Contract | Address | Explorer |
|---|---|---|
| TAGITCore | 0x3aDc7EFDb58Ae85483eFf5D4966D916185f31d1D | BaseScan |
| TAGITAccess | 0xb56A1D91995C212342FaA843468F03521340A1D6 | BaseScan |
| IdentityBadge | 0xebdAC9A0663c02a7297681b078aaD893EF345030 | BaseScan |
| CapabilityBadge | 0xb05d22706B08A3F6409601de520cf7A6dbCB573d | BaseScan |
| TAGITRecovery | 0x6BC3C69367E586810A3B317fA9F0406504e95866 | BaseScan |
| TAGITPaymaster | 0x6fFFa92efb419E812d5c9C9D0c1B1a0f5c6fFd1C | BaseScan |
Agent layer (ERC-8004)
The on-chain registry that lets AI agents verify physical goods: agent identity, reputation, validation, staking, robotic authorization, and payment escrow. Read them directly over any public Base Sepolia RPC, or through the TypeScript SDK. There is no REST agent registry to call instead — the chain is the registry.
| Contract | Address | Explorer |
|---|---|---|
| TAGITAgentIdentity | 0x0611FE60f6E37230bDaf04c5F2Ac2dc9012130a9 | BaseScan |
| TAGITAgentReputation | 0x32be6C82A57d5bCe897538d7dA4109eA0eeB0aA1 | BaseScan |
| TAGITAgentValidation | 0x34766dBa7040C2c8817f1Ee1e448209826DD607e | BaseScan |
| ReputationStaking | 0x4154af74DA2B3a98096317100296966Ade15574A | BaseScan |
| RoboticAuthorizer | 0x5C38684d87e826589Ec5Ed401D94C9671caE9f40 | BaseScan |
| VerificationEscrow | 0x4c9aACfcb64169E3BC187c227c4C0e0a5CFDA1cF | BaseScan |
Token & governance
The TAGIT utility token (ERC-20 + ERC20Votes), staking, the multi-house DAO, the treasury, and the timelock that owns the protocol's upgradeable proxies.
| Contract | Address | Explorer |
|---|---|---|
| TAGITToken | 0x5f98B83cD7Aef769cc51D2FB739BA49D561170DE | BaseScan |
| TAGITStaking | 0xB22F5688559D07e3a12DBB89f0481b967407F267 | BaseScan |
| TAGITGovernor | 0xCF67DF870EccBB7838c3ab7876467c89d84dce89 | BaseScan |
| TAGITTreasury | 0xa4a3720d705334f409DD24836CC75d642125f759 | BaseScan |
| TimelockController | 0xfdA2478dB73064eF770f4e5E5b97BC83801126e1 | BaseScan |
Archived deployments: OP Sepolia and Arbitrum Sepolia were deprecated on 2026-06-27 when Base Sepolia became the canonical home — the historical addresses are retained in the tagit-contracts repository and must not be used for new integrations.
Base Mainnet
Mainnet (chainId 8453) is not yet live. Deployment is gated on the external audit scheduled for Q3–Q4 2026 and targeted for H1 2027. Production addresses will be published on this page once deployed, verified, and audited — treat any "TAG IT mainnet address" you see elsewhere before then as fraudulent.