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 0xd36f17d6726aab08e4f240df9426e0bace6c6e1a6e2c8b53e0d6d4b0ca18e61b. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bdda4e1-8e9f-46df-9923-2e9597619cff.json and https://artists.proofprofile.net/proofs/artist/0bdda4e1-8e9f-46df-9923-2e9597619cff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).