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 0x2744a8f40cd37e5743cff2bb1fc9ff3107f5a1653e332a6cc65bd9fdeb8fb9ca. 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/716c4a16-367f-458b-96af-e9f6c21f78bd.json and https://artists.proofprofile.net/proofs/artist/716c4a16-367f-458b-96af-e9f6c21f78bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).