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 0x709d580ae884cef690ce6fe467331cfa1ab3a43627d00ae63062d8c031a6a441. 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/2ad60ee3-7036-4f50-bc43-e9d1add9841f.json and https://artists.proofprofile.net/proofs/artist/2ad60ee3-7036-4f50-bc43-e9d1add9841f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seven Pounds (Original Motion Picture Soundtrack)
Resistance (Original Motion Picture Soundtrack)