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 0xc00fef1fbddfa95f2dba2ffecd68397d9b7cf36135b0a69c0b7d474e4ef3f470. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2f48df1-52c9-40d2-b7aa-7ef409cf0f96.json and https://artists.proofprofile.net/proofs/artist/a2f48df1-52c9-40d2-b7aa-7ef409cf0f96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'esprit Français - A certain French Culture (1900-1940)
L'Espion de Mao (Original Motion Picture Soundtrack)
Billy le hamster cowboy (Original Motion Picture Soundtrack)
Impressionnisme - The Belle Epoque of Art, 1870-1910
Psychologie - Psychology (Documentary Line)