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 0x2cb7c865dd2f89814df32331ad1e4f2b84a7aa400fa4061a0c1860f2424fcad7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d27b0f21-4583-4802-8d56-9c03daba25f7.json and https://artists.proofprofile.net/proofs/artist/d27b0f21-4583-4802-8d56-9c03daba25f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Jahre Echo vom Hirsch - 40 Jahre Diä urchigä Glarner