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 0x09d40c716ab72299e962d5316378214e18f4fa3877bd8d7207936b7c18010ad3. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5557abb-96de-4574-8f38-c34dfb8cf290.json and https://artists.proofprofile.net/proofs/artist/f5557abb-96de-4574-8f38-c34dfb8cf290.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schneeweiss 11: Presented by Oliver Koletzki