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 0xb0d89a9fe834191a713cf9a6e62c6d36cd11b05bd5a2cde2afbe3dbd85d0dc1b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/472143f1-87b1-4a4d-a54b-547aeebd20fc.json and https://artists.proofprofile.net/proofs/artist/472143f1-87b1-4a4d-a54b-547aeebd20fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).