thumb|upright=1.5|Wineries in the Jeker Valley (Jekerdal) in the border area between Maastricht, Netherlands, and Kanne, Belgium Dutch wine () is wine made in the Netherlands. Although a small produce
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4194d4df1ef63214446d725a5001006d7b5ea50c3573c8e63219a171dbc81b2. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeb8c8be-3c75-4c9b-b528-b5118c0e9196.json and https://artists.proofprofile.net/proofs/artist/aeb8c8be-3c75-4c9b-b528-b5118c0e9196.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).