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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64c5d1bbed7a37c3924971d67bf2d5729bb0d97c44c775e6f32964cfcc8eb9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/569e7ada-8579-4508-80f6-2b66bd69a241.json and https://artists.proofprofile.net/proofs/artist/569e7ada-8579-4508-80f6-2b66bd69a241.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurri Doble P (Ella Baila Sola / AMG / PRC)