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 0xc0616cf4ccabd3e0745e725cbe0893abcb5dd3cbfab2c83a75b04c5f6244d0b2. 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/fec3aa7b-c76d-42cd-bfa5-6ca60e6da9b5.json and https://artists.proofprofile.net/proofs/artist/fec3aa7b-c76d-42cd-bfa5-6ca60e6da9b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).