{"copyright_id":"0xca81f6c830dbf5dc3d1f5c7bf83f27edd80774a1def236de01e825dbd433a3fd","name":"Los Desertores de Acapulco, Guerrero","registered_at":"2026-06-21T07:36:56Z","symbol":"NIM1864579","token_address":"0xf0f2a5372ec0045f13f38c0b3ca702de61c3880c","type":"artist","uuid":"e3ad40a5-c3c5-4fa8-bd69-b5d82f91025a"}
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 0xca81f6c830dbf5dc3d1f5c7bf83f27edd80774a1def236de01e825dbd433a3fd. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3ad40a5-c3c5-4fa8-bd69-b5d82f91025a.json and https://artists.proofprofile.net/proofs/artist/e3ad40a5-c3c5-4fa8-bd69-b5d82f91025a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).