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 0xe7ea491a37746f5aa00344f9d52498fbe7c7e064d36be50f234d7541f8adf5e9. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c1e8483-e5b2-4f64-907b-172e02773ea0.json and https://artists.proofprofile.net/proofs/artist/1c1e8483-e5b2-4f64-907b-172e02773ea0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Theme from an Untitled (and Possibly Foreign) Film
Theme from an Untitled (And Possibly Foreign) Film