thumb|French organist and composer Jean-Jacques Beauvarlet-Charpentier (1734-1794) Jean-Jacques Beauvarlet-Charpentier (28 June 1734 – 6 May 1794) was a celebrated French organist and composer.jean-ja
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 0xb72a63aac1cf0598477b79604deda23ea447ad43ac91e342d78b994c68b7094c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6141816a-ffa4-497e-8a56-03f1026add86.json and https://artists.proofprofile.net/proofs/artist/6141816a-ffa4-497e-8a56-03f1026add86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jean-Jacques Beauvarlet-Charpentier, œuvres pour orgue
Beauvarlet-Charpentier: Messe en Ré Mineur
Fugue from the Hymn to the Epiphany (pipe organ)
Rentrée des Processions 4 Grand Chœur (pipe organ)
Fugue on Conditor alme siderum (pipe organ)
Beauvarlet-Charpentier: 1er livre de Pièces de Clavecin