MAXX is a blockchain underlying platform that provides the foundation for the smart Internet of Vehicles industry. It provides decentralized application services for the automotive industry and consumers, and expands to travel-related multi-scenario applications to deeply tap the trillion-dollar automotive aftermarket. , to solve the difficulties of industry information asymmetry and non-standard service system. Using blockchain decentralization, uniqueness, non-tampering and other attributes, all the behaviors of car owners on MAXX are recorded on the distributed and public system. All modifications and changes are also recorded in the distribution ledger and permanently sexual preservation. According to MAXX's characteristics of not caching data, protecting personal privacy, protecting data copyright, effectively curbing data opacity, and supporting two-way anonymous transactions, etc., establish and optimize the car joint data structure of service providers, car owners, and manufacturers in the automotive industry to become a higher level Hierarchical identification fully solves the pain points of the traditional automotive aftermarket system.