Denis Comtet (born 30 April 1970) is a French organist, pianist, choral conductor, and conductor. Biography Training Born in Versailles, Denis Comtet studied organ with Gaston Litaize at the Sain
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 0x78399cd9b7fe93b520bce876682d5e21fe83fb0602425e7a15114143f1ad5ce2. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5270f1e5-98ec-48c5-a298-bae50247db4b.json and https://artists.proofprofile.net/proofs/artist/5270f1e5-98ec-48c5-a298-bae50247db4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).