1, the decentralization, transparency and trust of blockchain technology bring opportunities to solve the problems of user privacy leakage, poor dispersion and irregularity of maintenance services in the automobile industry. The key to the application of blockchain in automobile field lies in the construction and integration of automobile identity and user credit system, creating automobile logo, completely recording key information in the process of automobile manufacturing and use, promoting the standardization of traditional automobile industry chain, establishing reliable service platform quality control system and optimized inventory dynamic management for automobile enterprises, and providing users with better repair, maintenance and used car trading services. Combining automobile identity and personal credit, accessing the blockchain system can transform the original business process enjoyed by automobiles. In the future, blockchain, as the underlying technology, will be combined with docking edge technologies such as the Internet of Things and big data to realize the secure interconnection of different smart devices, continuously improve the processing capacity of blockchain technology, and accelerate its application in the fields of autonomous driving and intelligence.

2. The development of digital economy has brought about changes in market production factors, and the development of data meta-market has put forward higher requirements for data sharing. As a new factor of production, data has undefined rights, such as high liquidity, reproducibility, and difficulty in separating ownership and use rights. At the same time, the marginal cost of data use is zero, and the greater the enjoyment value, the greater the value. Ensuring the security and credibility of data and giving full play to the value of data are playing an increasingly important role in the development of digital economy.

3. The blockchain system is transparent, tamper-proof and forgeable, which can effectively solve this problem and will have a far-reaching impact in the fields of financial Internet of Things, supply chain and government services. Because of its transparency, reliability and traceability, blockchain technology can build an automobile identity, completely record the sources and production processes, sales channels, use and maintenance, vehicle positioning and other data of automobile parts, and upgrade it to the standard of "research, production, supply and sales" in the traditional automobile industry chain. At the same time, a tamper-proof and secure encrypted user credit system can be built through the blockchain to record, store and integrate user online transaction information and credit evaluation information such as asset information, user information and user behavior. Because the application of automobile retail, leasing, * * * enjoyment and other scenes is essentially an extension of the personal credit system, it will eventually bring information such as identity, user credit and service history to car owners through the blockchain system, improve the security of interconnection, and realize the application of blockchain automatic driving in the fields of car networking and car * *.