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 0x11605a24a8fdc8dbc13fe8126c9161ca8f8f55c6d8c3b4e3fdff888dbd1f3b10. 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/68f70a55-f38d-4e1c-96cc-bc4a37ea12b6.json and https://artists.proofprofile.net/proofs/artist/68f70a55-f38d-4e1c-96cc-bc4a37ea12b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).