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 0xbab3b931e4d4fc03b9d22448eaac8b93d8cd7ea6cafbde343beffecec9a09d07. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a4f3f4a-4f6f-48d3-8e6d-70000555a022.json and https://artists.proofprofile.net/proofs/artist/7a4f3f4a-4f6f-48d3-8e6d-70000555a022.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).