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 0x9526f492b94a5cb4fe654fbb740d7575abfae4c6ac90fe0fe4b5e0e23451b9eb. Chain 2 (Bitcoin): anchored in block 953938 (2026-06-16T11:35:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/207e8a60-5e21-4895-9c73-d33a2410f120.json and https://artists.proofprofile.net/proofs/artist/207e8a60-5e21-4895-9c73-d33a2410f120.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).