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 0xe3f35c3b4bcd8e878d990f4d98edb3e17e8f7ab8626d929885ea9dc45b4046c0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d845f7b-6950-4368-8536-7b870f720d0e.json and https://artists.proofprofile.net/proofs/artist/8d845f7b-6950-4368-8536-7b870f720d0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
MTG - Tropa do Serrão x Pentão de Robocop