{"copyright_id":"0x6edba2a723d1a47f9dc93abf170cb1650d3b4f16d610ab6932bc02c5be1c85fa","name":"Renaud Charbonneau Ryffranck","registered_at":"2026-06-16T03:45:06Z","symbol":"NIM0927125","token_address":"0xa25130e9cafbf8aa35bf349ba6b4ebfadfc20b5a","type":"artist","uuid":"289c6276-05f2-4aac-b834-1a5cf39da27c"}
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 0x6edba2a723d1a47f9dc93abf170cb1650d3b4f16d610ab6932bc02c5be1c85fa. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/289c6276-05f2-4aac-b834-1a5cf39da27c.json and https://artists.proofprofile.net/proofs/artist/289c6276-05f2-4aac-b834-1a5cf39da27c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).