Jacques Boyvin (c. 1649 – 30 June 1706) was a French Baroque composer and organist. He was probably born in Paris, and studied there. One of his first jobs was that of organist of the Parisian church
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2931a6a76694d0455291338926b4664c9c697402f2d153e1827d20c014b0c0. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bdeda4d-5704-4431-b8d2-4de591e3a214.json and https://artists.proofprofile.net/proofs/artist/3bdeda4d-5704-4431-b8d2-4de591e3a214.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boyvin: Les Livres d'orgue, Cinq Suites (Orgue F. H. Clicquot, Souvigny)
Boyvin: Pièces d'orgue - Du Mont: Motets (Cantica Sacra)
Jacques Boyvin: Four Suites from the Second Livre d'Orgue; 1732 Andreas Silbermann Organ, Ebersmunster
French Organ Music from the Golden Age, Vol. 6: Jacques Boyvin
Boyvin: Livre d'orgue II, Ton 8: V. Récit Grave
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e481eec362d8d1a30b48bae290d84f7bec94c75dded8a77539cb33bb4104d6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU622362401.