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 0x80d582226c3e9d69126c69f63247230ffb7c1c6cb156bdd001c85bc260da43b6. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d9a4882-9841-46c9-a6ac-a36fb14ffd42.json and https://artists.proofprofile.net/proofs/artist/7d9a4882-9841-46c9-a6ac-a36fb14ffd42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).