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 0x52aeab3849247031e3d2fbcb22df33fae90e15713eced6a77b7a7e71e8dd53bf. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cc2b2b6-0292-4cd0-a098-b48fa3fc8b4c.json and https://artists.proofprofile.net/proofs/artist/9cc2b2b6-0292-4cd0-a098-b48fa3fc8b4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).