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 0x977c555a6a4127e91e8eeda9795722097b873ccf1c43223d6bdeba620e17dc62. 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/7914ce69-716d-4155-8e18-3a149f64d8dc.json and https://artists.proofprofile.net/proofs/artist/7914ce69-716d-4155-8e18-3a149f64d8dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laying Siege to Hammerburg (Noble Houses)
Rise and Fall of House Kaltenborn (Noble Houses)