Method and apparatus for recording mileage data of vehicle on blockchain

A method for recording mileage data of a vehicle on a blockchain, comprising:

• providing a vehicle database and a mileage database, wherein the vehicle database is configured to store an identification number that uniquely identifies the vehicle and an account address of the vehicle on the blockchain, a vehicle code, a first maximum value of vehicle codes in the vehicle database, and the mileage database is configured to store the mileage data about vehicle kilometers of travel (VKT);
• providing a vehicle code recording database, wherein the vehicle code recording database is configured to record a second maximum value of vehicle codes at an execution time;
• obtaining a vehicle identification number (VIN) from the vehicle database in response to determining that the second maximum value is less than the first maximum value of the vehicle codes in the vehicle database;
• obtaining the mileage data of the vehicle from the mileage database according to the VIN;
• storing data related to the mileage data in the blockchain;
• and
• updating a vehicle code in the vehicle code recording database using the first maximum value;
• wherein the blockchain comprises transaction data,
• wherein storing data related to the mileage data in the blockchain comprises:
• storing the data related to the mileage data as a part of the transaction data:
• wherein the method further comprises:
• generating a hash value according to the transaction data;
• and
• recording the VIN and the hash value in a vehicle hash value database, wherein in the vehicle hash value database, each VIN corresponds to a plurality of hash values, and the plurality of hash values are arranged in a chronological order, and
• wherein the transaction data comprises the account address.