thumb|The Port of New York and New Jersey, U.S., grew from the original harbor at the convergence of the Hudson River and the East River at the Upper New York Bay. A port is a maritime facility compri
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 0xe45edad95d9d784fc927458fc4ad2c6bf0d157052f4c8c52191159a041e0c9f4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/674834c5-72b0-4e81-ab42-f2a1eddb6456.json and https://artists.proofprofile.net/proofs/artist/674834c5-72b0-4e81-ab42-f2a1eddb6456.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).