The permissioned blockchain is designed to allow multiple parties including car owner, seller, insurance companies, and garages to upload the operation data related to a car. This information is crucial to put a price on an used car when the owner wants to sell it. The system is designed with the incentives of the participants and strict data structure to make the car operation lifetime more transparent. Blockchain technology ensure the authenticity of the data and the consensus among all the parties. The network is expected to close the gap of the used car quality and its price, then create a new standard for used car market.