thumb|345x345px|An illustrated Portrait of Muhammad Shah Qajar and his Vizier Haj Mirza Aghasi in Iran during the 19th century. Vizier's roles as advisors in courts evolved over time, becoming an impo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xda45ffd5fb212d0a4233a5c6f82614f3ee5d2b3114831e2dd764fa44fef376e5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a4850b3-8a03-4fdb-91b6-81dcc3bdc8e9.json and https://artists.proofprofile.net/proofs/artist/8a4850b3-8a03-4fdb-91b6-81dcc3bdc8e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).