Vincent Delerm (born 31 August 1976) is a French singer-songwriter, pianist and composer. He is the son of the writer Philippe Delerm and illustrator Martine Delerm. His first album was released in 2
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 0x73d0d0c4129239fbf7d08623b05594dce8e0b166e6d9a0073b21af413ce15358. 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/d36ec238-a16d-46e6-8aba-b1ce826430bc.json and https://artists.proofprofile.net/proofs/artist/d36ec238-a16d-46e6-8aba-b1ce826430bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).