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 0xad331f9d80544ce3f3e9b20e7d6af6f2987a8714330fced1e868477b0c2c149a. 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/57c4875e-ac9b-4f5e-a06c-a6fdfd6de41f.json and https://artists.proofprofile.net/proofs/artist/57c4875e-ac9b-4f5e-a06c-a6fdfd6de41f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voltaire Music Pres. The Miami Diary 2025