{"copyright_id":"0x79b2aff4544ba4cbc6c2efc9bc4058b6bda0f9c2fecfbd828cae8b81c2e9d55c","name":"Cliff Halsam","registered_at":"2026-06-17T19:10:52Z","symbol":"NIM1491556","token_address":"0xd0f156c0eaf983f63cb7377fcbcceccd2a1b486c","type":"artist","uuid":"9986ccf8-da75-4a7e-9208-de16af83f8df"}
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 0x79b2aff4544ba4cbc6c2efc9bc4058b6bda0f9c2fecfbd828cae8b81c2e9d55c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9986ccf8-da75-4a7e-9208-de16af83f8df.json and https://artists.proofprofile.net/proofs/artist/9986ccf8-da75-4a7e-9208-de16af83f8df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).