1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f98537847f7c595112c43f252229c585243499ce17844f016a10ef077f2b0. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a868544-e497-47d4-a204-fcb87856855d.json and https://artists.proofprofile.net/proofs/artist/6a868544-e497-47d4-a204-fcb87856855d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Éric, Marie-Jo & Bernard font un petit jam aux 3 fruits en attendant le printemps
Serge Fiori: Un musicien parmi tant d'autres
Un musicien parmi tant d'autres - Version spectacle inédite 1977
La petite gayole - Nous sommes 180 millions de francophones
Balade habituelle au quartier imaginaire