Hervé Vilard (born René Vilard; 24 July 1946 in Paris, France) is a French pop singer, who first became famous in the 1960s. His first single "Capri c'est fini" became an international hit in 1965 and
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2527c54ea6d57f56d412e24667b633f95333bc5dbf3f836a320f9a49d910aa. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d512ebe0-bc1b-4983-b56c-897e747d4ad8.json and https://artists.proofprofile.net/proofs/artist/d512ebe0-bc1b-4983-b56c-897e747d4ad8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).