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 0xd47d88057fc8fe88e2474b3c182d2ac0b8233d10c2a299e02aaceb8eac915308. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b12a772-97c7-4747-9db3-b0359dad3fe7.json and https://artists.proofprofile.net/proofs/artist/6b12a772-97c7-4747-9db3-b0359dad3fe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tubelight (Original Motion Picture Soundtrack)