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 0x781b41901646ede17018093eeecf3751ef97a752ac3af03332e4a068010c624f. 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/f185eb4d-d948-4378-a0fd-b77339ea7c0c.json and https://artists.proofprofile.net/proofs/artist/f185eb4d-d948-4378-a0fd-b77339ea7c0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Strait Blues (Official Motion Picture Soundtrack)