Jean-Louis Florentz (19 December 1947 – 4 July 2004) was a French composer. Biography Born in Asnières-sur-Seine, Florentz was a student of Pierre Schaeffer and Olivier Messiaen. In 1978, he won th
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 0xe9a06e32c8793c36410fa5b9b11a54cfcd5f7326e625dc6c664524ba08855e4b. 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/5a357bf8-8df9-4c2e-a073-48e3224826de.json and https://artists.proofprofile.net/proofs/artist/5a357bf8-8df9-4c2e-a073-48e3224826de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Florentz: Magnificat, Op. 3 "Antiphone pour la Visitation" & Les Laudes, Op. 5 (À l'orgue de Plaisance-du-Gers)
Florentz : L'enfant des îles - L'anneau de Salomon
Florentz: De cire et or - L'oeuvre pour orgue