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 0xc83d3f8fd1aec11339ab03e05cd88280106f5df7cde9a572fbb4aa561d8b9c19. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f65b133-1b6e-4bca-ae37-d7c0126c783c.json and https://artists.proofprofile.net/proofs/artist/3f65b133-1b6e-4bca-ae37-d7c0126c783c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toni (Original Motion Picture Soundtrack)
142 YEARS (Original Documentary Soundtrack)
Letters From The Blue (Original Documentary Soundtrack)
STRYGLA (Original Theatrical Soundtrack)