thumb|Freightliner M2 dump truck|upright=1.3 A truck (North American and Australian English) or lorry (British English) is a motor vehicle designed to transport freight, carry specialized payloads, o
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 0x22503f3bdd6d878a674daa088cf78eb28c8ba572bc6e3f4631c7c42bf681bb8b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c161aa89-d93f-40de-9fd6-c88b89c2e1ad.json and https://artists.proofprofile.net/proofs/artist/c161aa89-d93f-40de-9fd6-c88b89c2e1ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).