{"copyright_id":"0x83cb9560a05e47d0d59cdbfd6f566320fb4ce37dbb88e2f5db9e9e229e3df8a5","name":"Marcelo Peña Herrera","registered_at":"2026-06-20T10:08:23Z","symbol":"NIM1588814","token_address":"0x68ca97bd1fbfcbc2ede5b4913632e3555faa55a5","type":"artist","uuid":"ac87be24-bb4f-461f-ad0e-e4eaa13ed368"}
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 0x83cb9560a05e47d0d59cdbfd6f566320fb4ce37dbb88e2f5db9e9e229e3df8a5. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac87be24-bb4f-461f-ad0e-e4eaa13ed368.json and https://artists.proofprofile.net/proofs/artist/ac87be24-bb4f-461f-ad0e-e4eaa13ed368.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Disco de Oro, 18 Pasacalles Ecuatorianos, Vol.1