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 0x6b770fa7cd4d1a568aae7ac6e737ddc3a28f25062b41db7cf30bd4abdad96b73. 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/9e9206df-3f52-4f63-b44d-80f6bf4a7069.json and https://artists.proofprofile.net/proofs/artist/9e9206df-3f52-4f63-b44d-80f6bf4a7069.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ESCAPE THE CiTY (Level 3 - a moabit tale)