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 0x8f2085eb84e7e8b86a7bb8d180c879ea3f25ada15a69255d9ad746752bd8fb6d. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc178c2b-7f50-424e-be6c-3169b08ebb4d.json and https://artists.proofprofile.net/proofs/artist/dc178c2b-7f50-424e-be6c-3169b08ebb4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).