| dc.description.abstract | In the used car market, consumers can only judge the condition of the car based on the information provided by dealers and that forms a situation of information asymmetry. In recent years, many countries have applied blockchain technology to the used car market, because it can record the use of vehicles in the past and store them in the blockchain. Therefore, this study tries to develop a vehicle traceability system based on blockchain, which can store the transaction records from the registering, trading, maintenance to the crime or violating record of the car. With the advantage of reliable and distributed ledger of Hyperledger, it can support the commercial transactions by building the commercial network of used cars with Hyperledger Fabric. After the network is turned on and running, participants can make transactions and generate transaction blocks. Hyperledger Composer defines the participants in the commercial network, and the records generated by these participants will remain in the chain. In this case, when the customer wants to query the used car’s history, they can use VIN code to query it from the client REST API interface. Although the used car dealer can modify the odometer, there is no way to modify the record on the blockchain. Blockchain technology increases the transparency and fairness of the transaction and protects the rights of consumers. The used car blockchain network based on Hyperledge framework keeps all past transaction records of the vehicle in the blockchain, making the data safe and credible. By tracking its complete history, used car customers can better understand the vehicle′s condition. If the blockchain technology can be applied to Taiwan used car market, we can reduce the information asymmetry of the market through the immutability and permanent reservation of blockchain. | en_US |