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 0xe2ada75f7acfe71f959b962ed2334f8f9015056a8c14197b0cdce67ba43f238a. 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/01d1c7d0-6c5e-48c6-8f6f-ea6d5a5c9e46.json and https://artists.proofprofile.net/proofs/artist/01d1c7d0-6c5e-48c6-8f6f-ea6d5a5c9e46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).