{"copyright_id":"0xe4eb1bdda8fe62310d3b2ef62a0ee9aef5a215015f5a5af200dfc0dd653fcf3b","name":"Packy Duangchampar","registered_at":"2026-06-20T18:32:07Z","symbol":"NIM1681940","token_address":"0x8759f9e2dd4ebbc8bf3d89a268bf859778d9aebf","type":"artist","uuid":"bf8ac0f0-abb4-40e0-bb2e-c7fe7890ba4c"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb1bdda8fe62310d3b2ef62a0ee9aef5a215015f5a5af200dfc0dd653fcf3b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8ac0f0-abb4-40e0-bb2e-c7fe7890ba4c.json and https://artists.proofprofile.net/proofs/artist/bf8ac0f0-abb4-40e0-bb2e-c7fe7890ba4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).