{"copyright_id":"0x4ab1d852a77e872fb4ecfb8a9f56efc6046fe568e25ab0cafb0978a75c5fc733","name":"La Primitiva Setabense de Xàtiva","registered_at":"2026-06-20T10:08:50Z","symbol":"NIM1588888","token_address":"0x4b0ffa6bc710cac7f5ac112630c166c6170673eb","type":"artist","uuid":"ac8ddafe-3d40-49aa-a539-4ee3ed7a97ac"}
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 0x4ab1d852a77e872fb4ecfb8a9f56efc6046fe568e25ab0cafb0978a75c5fc733. 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/ac8ddafe-3d40-49aa-a539-4ee3ed7a97ac.json and https://artists.proofprofile.net/proofs/artist/ac8ddafe-3d40-49aa-a539-4ee3ed7a97ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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