Not a simulation. Press the button and this site registers a vehicle passport on the deployed preprod contract, records its history, and proves claims about values it never publishes. Real proofs, real fees, real blocks you can look up yourself.
A fresh VIN is hashed and anchored with a content root committing to its full declaration panel. The VIN itself is never published.
Mileage, accidents and keepers are created under integrity rules fixed at creation, then the odometer moves once. Only commitments reach the ledger.
Claims are proven in zero knowledge. One claim is chosen so the record cannot support it: watch it get refused in-circuit and write nothing.
The whole run takes a few minutes. Each transaction is proven on this server, funded from our own wallet, submitted to a preprod node, and then waited for until a block carries it.
Nothing above has to be taken on trust. The contract is public, and so is every transaction the run makes. Ask the indexer what the contract's latest action is and compare it against the hashes in your receipt.