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 0x432fe504a37421da6f88d2ae21d7c6efc5f98243b66031ec1ef72be9d92ddb05. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44e8dfb8-cd5c-4ec8-8cc5-0bb0a92c9dc0.json and https://artists.proofprofile.net/proofs/artist/44e8dfb8-cd5c-4ec8-8cc5-0bb0a92c9dc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).