thumb|upright| Julien-François Zbinden (11 November 1917 – 8 March 2021) was a Swiss composer and jazz pianist. Life Born in Rolle, Kanton Waadt, Zbinden studied piano in Lausanne and Geneva. He l
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 0xee16b0a90e53a8c363bba3040ee40dfe1d55dc92c85fd7840c9f3ea77e67efc6. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a87812e-5e68-4a68-9177-4bc67382aaaa.json and https://artists.proofprofile.net/proofs/artist/1a87812e-5e68-4a68-9177-4bc67382aaaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Julien-François Zbinden: Oeuvres pour piano
Julien-François Zbinden: Oeuvres pour et avec Harpe (Works for Harp)
Julien-François Zbinden: Complete Works for String Quartet
Julien-François Zbinden: Le compositeur au piano
Julien-François Zbinden: Homage (Solo and Chamber Music)