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 0x03000d16dcf6a3ed0b034b38dc8820bce951842d2a5f0a767dac4ae2c9e7c770. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7312c0db-47f3-4d0c-9791-d72b086e6c15.json and https://artists.proofprofile.net/proofs/artist/7312c0db-47f3-4d0c-9791-d72b086e6c15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).