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 0xa7bd0752e21178f8f30b0357d52cdb9cce2357cc7ad0febb0f0b0e9d5f4e0360. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46a7d80d-3220-4f6a-abbd-77fb27ebf5f8.json and https://artists.proofprofile.net/proofs/artist/46a7d80d-3220-4f6a-abbd-77fb27ebf5f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).