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 0x298928a0ca85f5399ab7c2eddf1bb8f9d4e9e9e608c7477d4e2baa4ce7ad76bd. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0dc8110-a599-422e-b3c0-a79276f931de.json and https://artists.proofprofile.net/proofs/artist/a0dc8110-a599-422e-b3c0-a79276f931de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).