Choer d'Enfants de l'Opera National de Paris:Maîtrise des Hauts-de-Seine
{"copyright_id":"0xe8ade4d8d82020e5b422d7bea0bb07ea77022cce467bd6c399a2bcc9f1753507","name":"Choer d'Enfants de l'Opera National de Paris:Maîtrise des Hauts-de-Seine","registered_at":"2026-06-16T00:38:32Z","symbol":"NIM0882569","token_address":"0x028d99fd4d22a2fac4975a993db42c0e402244d1","type":"artist","uuid":"1fbd4230-1a2a-46aa-99bf-bc12e0b7f74b"}
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 0xe8ade4d8d82020e5b422d7bea0bb07ea77022cce467bd6c399a2bcc9f1753507. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fbd4230-1a2a-46aa-99bf-bc12e0b7f74b.json and https://artists.proofprofile.net/proofs/artist/1fbd4230-1a2a-46aa-99bf-bc12e0b7f74b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).