{"copyright_id":"0xf57227f9ff5898c7f4ae7873eec573ae0b55e073dcd8face0bebfdc0ccbdef0c","name":"Manuel Minguillón","registered_at":"2026-06-16T12:29:51Z","symbol":"NIM1052397","token_address":"0x2fac8a4eed5c107eca0f9bc352de2acbdea22ce7","type":"artist","uuid":"41d936ef-e00a-4073-b720-fdd104757a19"}
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 0xf57227f9ff5898c7f4ae7873eec573ae0b55e073dcd8face0bebfdc0ccbdef0c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41d936ef-e00a-4073-b720-fdd104757a19.json and https://artists.proofprofile.net/proofs/artist/41d936ef-e00a-4073-b720-fdd104757a19.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.