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 0x724ac3b3d85e680cc940b7743ed24042a26e59f9d01e77928d21d485f7549ed0. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b90bc2e-c496-4df4-a0b5-1535054b4fb9.json and https://artists.proofprofile.net/proofs/artist/2b90bc2e-c496-4df4-a0b5-1535054b4fb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Corán Santo - Il Sacro Corano, Vol 12
El Corán Santo - Il Sacro Corano, Vol 13