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 0xb06dabdf9ac4f95179eeca63d7c4e38c21b98ac51994780edce243c18c2fed40. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1213c50-8966-4c68-9ddb-35b927f617e5.json and https://artists.proofprofile.net/proofs/artist/e1213c50-8966-4c68-9ddb-35b927f617e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psychedelic Circus: Rarities From the USA