{"copyright_id":"0xdef59acc4c8fe0b7e50c77d1f39fb6536af9e074cbe3f7cbfc8deb4c5fd2dde6","name":"Joost Lieke","registered_at":"2026-06-20T14:34:00Z","symbol":"NIM1632821","token_address":"0xec60fcd0ada6c426f8dec81a062c7bb288dd757e","type":"artist","uuid":"b578fea2-c2df-4ebc-b4aa-9f8607dc98a4"}
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 0xdef59acc4c8fe0b7e50c77d1f39fb6536af9e074cbe3f7cbfc8deb4c5fd2dde6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b578fea2-c2df-4ebc-b4aa-9f8607dc98a4.json and https://artists.proofprofile.net/proofs/artist/b578fea2-c2df-4ebc-b4aa-9f8607dc98a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).