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 0xae221e1aea79aaad39538160d5451eaf580e6ef4ee8c61b6ecbffeee63878407. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08aee34f-0fb7-4c0f-bd0d-eda744519751.json and https://artists.proofprofile.net/proofs/artist/08aee34f-0fb7-4c0f-bd0d-eda744519751.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Metropolis (Original Motion Picture Soundtrack)
Four Russian Peasant Songs: I. Près de l'Église à Chigisak
Four Russian Peasant Songs: III. Le Brochet
Four Russian Peasant Songs: IV. Monsieur Ventru
Beatitudines : Musiques françaises du XXème siècle pour choeur a cappella
Les crieuses: I. Clytemnestre et Cassandre