Deployments
This page is the canonical source for Hokusai protocol contract addresses. Integrators should fetch deployment addresses from here rather than relying on hard-coded values copied from third-party sources.
Sepolia (v2 - current)
Deployed on 2026-04-28. All new integrations should target these addresses.
| Contract | Address |
|---|---|
| ModelRegistry | 0x8E891850C0677c2D9581c953bF1Df5446cB4c54f |
| TokenManager | 0x4ebC3558Ec08c81AbB9F220fd2C98c838b96De68 |
| DeltaVerifier | 0x4812263c7A4317E971F461E611ACD2A51679F7af |
| DataContributionRegistry | 0xD390BAE1361bBc8296EA7b6e5757A86b3438ac4E |
| HokusaiAMMFactory | 0xc6c7f2079fE6222885dC401C58260D9bfFc48447 |
| InfrastructureReserve | 0x68A5B3b6519d70D1D08A46B0F2206cF442AF05A1 |
| InfrastructureCostOracle | 0x2BF187014a051A54B56FA5552838e3F9005A7AEe |
| UsageFeeRouter | 0x31258B9A4eF51cDfa09fb8d479CE1Cd19f5ab8c5 |
| MockUSDC | 0x4fE61E343D9c7CB5C0D9DeE293F0Dbcf7C2Dd645 |
| HLEAD token | 0x9690580864274E57899a79bD97e8d7C6cAe0d7d5 |
| HLEAD params | 0xc7325cB1f179f404Bad7FE62B83B708181FAaD6d |
| HLEAD pool | 0x726f46e15cb8F05F291C6337F497da9D5A2738ff |
Reference apps
The HLEAD addresses above belong to the HLEAD reference model — Hokusai's first deployed model token on Sepolia v2 (Pipeline Win Predictor / Model 25). HLEAD is a model token, not protocol infrastructure. Future reference deployments will appear in the Reference Apps section.
Verifying addresses
Each address links to Sepolia Etherscan. Verify deployed bytecode and metadata there before integrating.
Deprecated deployments
An earlier Sepolia v1 deployment from the 2026-01-20 era was superseded by the v2 deployment on 2026-04-28. Do not integrate against any pre-2026-04-28 Sepolia addresses; migrate to the v2 set above instead.
Reporting issues / requesting mainnet info
For contract architecture context, see the Smart Contract Overview. For support or mainnet deployment questions, use the channels listed in Community.