{"copyright_id":"0x5ffba15eadba94d02fd51ee5c80fed5b2bd8406cdab8faabf3bcfc6eee58235f","name":"Cheb Farid","registered_at":"2026-06-20T17:45:40Z","symbol":"NIM1670115","token_address":"0xcf9c2a657355f7b891e360db61ced4ecf8bae41d","type":"artist","uuid":"bc9f96ef-8bc0-4454-8459-46fc7cd8e1c2"}
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 0x5ffba15eadba94d02fd51ee5c80fed5b2bd8406cdab8faabf3bcfc6eee58235f. 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/bc9f96ef-8bc0-4454-8459-46fc7cd8e1c2.json and https://artists.proofprofile.net/proofs/artist/bc9f96ef-8bc0-4454-8459-46fc7cd8e1c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).