Method and device for storing traffic information based on coalition chain

The invention discloses a method and a device for storing traffic information based on a coalition chain. The method comprises the following steps: the identity information of a driver is collected when an automobile terminal is started; authentication is carried out through the blockchain technology; the information is saved on the blockchain; the information on the blockchain has the characteristics of being non-tamperable and is stored in a decentralized database, thereby solving the technical problem that the current traffic information queries can only use the relevant sensors and other auxiliary means to determine the identity of a perpetrator after a traffic accident occurs; due to too many uncertain factors, the collection of evidence on the scene of the accident is affected, suchas the serious damage of the sensor in the accident, human malicious damage and other factors; and even after the relevant evidence has been collected and uploaded to a central server, the data may also be maliciously deleted