Libera/Robert Prizeman/Fiona Pears/John Anderson/Steven Geraghty/Chris Dodd/Ian Tilley/Joseph Sanders-Wilde/Tom Cully
{"copyright_id":"0x22e0e9e90526f49a6c0fab99feb1f100f1431d21c4e5a4ee14d91db043a06013","name":"Libera/Robert Prizeman/Fiona Pears/John Anderson/Steven Geraghty/Chris Dodd/Ian Tilley/Joseph Sanders-Wilde/Tom Cully","registered_at":"2026-06-20T19:40:59Z","symbol":"NIM1697418","token_address":"0xee5980409551d4a435da13dbc8eefd2ea555c46d","type":"artist","uuid":"c2ab2e95-258f-4ba4-aeb0-f1697ac405ec"}
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 0x22e0e9e90526f49a6c0fab99feb1f100f1431d21c4e5a4ee14d91db043a06013. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2ab2e95-258f-4ba4-aeb0-f1697ac405ec.json and https://artists.proofprofile.net/proofs/artist/c2ab2e95-258f-4ba4-aeb0-f1697ac405ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).