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 0x91737b04365323fee953834c89690154ffbb0cdc452ad572bf9af330760e308e. 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/b1061eb7-b333-4e22-b4df-958cb28f0f7c.json and https://artists.proofprofile.net/proofs/artist/b1061eb7-b333-4e22-b4df-958cb28f0f7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Aventurero / No Me Amenaces / Matalas