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 0xfd0d9026b9f2d2e7d3ecb877fe1301ff0b99e2a01ff2ea321f0430ba1f67e156. 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/9a6b6f1d-b1d6-4c56-9aee-5f367b1f79e5.json and https://artists.proofprofile.net/proofs/artist/9a6b6f1d-b1d6-4c56-9aee-5f367b1f79e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).