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 0x808e8e0aae477fe0aa57807f30f99ec487ae6ce5c2e4bf5599c4b2f89e8d0e86. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3db58015-6a2e-4601-97ea-4971cdf9e432.json and https://artists.proofprofile.net/proofs/artist/3db58015-6a2e-4601-97ea-4971cdf9e432.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).