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 0xdc5724cf7d3f2d2519b646c3ee1bf42104fd5fcee41b6b5065fb40e4bd6cf81e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54cc97fb-a425-4363-8c9c-deb34ab2d1c9.json and https://artists.proofprofile.net/proofs/artist/54cc97fb-a425-4363-8c9c-deb34ab2d1c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).