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 0x57037232b1d56763efe5b73fd8b9fe5d3cf2ba2806229fec21946a2160ede760. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07d33b9b-19bb-4a69-b9ae-f3f84b1a1938.json and https://artists.proofprofile.net/proofs/artist/07d33b9b-19bb-4a69-b9ae-f3f84b1a1938.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).