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 0xd983bfae2357e7456f2d19f22d130afdd7c74f11ce1d56446d4b4fe43364ae70. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/974a13d5-21c9-48ab-a96d-53e3c12ff0ae.json and https://artists.proofprofile.net/proofs/artist/974a13d5-21c9-48ab-a96d-53e3c12ff0ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).