1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645538afdca740632b63818d06a7ca28ce6d832aa47f55911b74952d6f398335. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b662582-444c-414b-8f45-afca44f78814.json and https://artists.proofprofile.net/proofs/artist/7b662582-444c-414b-8f45-afca44f78814.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La nuit des longs couteaux (Bande originale du film)
Cali: Paris Urban Quartet - Heavy Metal Machine
Fabien Cali: Niviana's Devil Drop (Live)
Niviana’s Devil Drop: II. Aurores - Live
Niviana’s Devil Drop: III. Lunar Eclipse - Live
Niviana’s Devil Drop: IV. Handstand - Live
Niviana’s Devil Drop: V. Devil Drop - Live
Belle et Sébastien (Original Motion Picture Soundtrack)