Block chain technology has a decentralized, distributed and difficult to tamper with the information, security, anonymity and other natural features, very suitable for solving the problem of big data sharing difficulty, with block chain distributed storage, decentralization, point-to-point transmission function, city each operational management unit is a node, the data need not through the center of the data processing, data can be directly sent to the designated distributed database, for data transmission directly, and then solve the data difficult to
