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 0xbbbe3e32ca56bcd90898b0ee83c3b04c3555d012fc5e4b80d5cd2d5c03bbc81c. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0de84051-23f6-4a84-99d6-510ef21c3bb7.json and https://artists.proofprofile.net/proofs/artist/0de84051-23f6-4a84-99d6-510ef21c3bb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).