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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d3efb2acc990ae96ff0b86f0f08efa68e5a6cec796eab2373663b7985d57c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6c0faf1-7fa4-4f22-96e8-e3a81e7a4647.json and https://artists.proofprofile.net/proofs/artist/f6c0faf1-7fa4-4f22-96e8-e3a81e7a4647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).