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 0x712149edeb4c8fbc8dbd60fd3e7db387abddd5dd57c7c871a7bc44568619edc7. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4edaa3a0-c609-47e8-b1a1-53a42bfcf163.json and https://artists.proofprofile.net/proofs/artist/4edaa3a0-c609-47e8-b1a1-53a42bfcf163.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Looking for Europe (The Neofolk Compendium)