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 0x7fac0f2cdd6b4774003a167fa1ae0478bb5da3671bed4a9d0985f4356bc34f60. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e62da60e-c73d-40cf-8ec8-9de05cd1a791.json and https://artists.proofprofile.net/proofs/artist/e62da60e-c73d-40cf-8ec8-9de05cd1a791.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).