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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b13d942a5cff0b23f37a71bab19c9cbb24c53ab5001d99594fb9ba51687e4. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ecb9bb2-83e2-4ae5-8a3f-4f87ce46b37b.json and https://artists.proofprofile.net/proofs/artist/1ecb9bb2-83e2-4ae5-8a3f-4f87ce46b37b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).