Trusted collection, management and sharing of data based on blockchain and IoT devices This paper takes the Internet of Things(lot) and Blockchain technology as the research direction, and makes a comprehensive analysis of the trusted data collection, management and sharing at the device end of the Internet of Things. It mainly solves the problems of data acquisition, data protocol, data application and data security, and provides solutions. The Internet of Things (IOT) technology is used to solve the problems of mass data information collection, multicommunication protocol integration, directional data acquisition and analysis, sensor direct acquisition and application, and wireless Internet of Things integration. Block chain technology is used to solve multicenter data acquisition and storage, data traceability can not be tampered with, data sharing is safe and reliable.

A Security Transmission and Storage Solution about Sensing Image for Blockchain in the Internet of Things With the rapid development of the Internet of Things (IoT), the number of IoT devices has increased exponentially. Therefore, we have put forward higher security requirements for the management, transmission, and storage of massive IoT data. However, during the transmission process of IoT data, security issues, such as data theft and forgery, are prone to occur. In addition, most existing data storage solutions are centralized, i.e., data are stored and maintained by a centralized server. Once the server is maliciously attacked, the security of IoT data will be greatly threatened. In view of the abovementioned security issues, a security transmission and storage solution is proposed about sensing image for blockchain in the IoT. Firstly, this solution intelligently senses user image information, and divides these sensed data into intelligent blocks. Secondly, different blocks of data are encrypted and transmitted securely through intelligent encryption algorithms. Finally, signature verification and storage are performed through an intelligent verification algorithm. Compared with the traditional IoT data transmission and centralized storage solution, our solution combines the IoT with the blockchain, making use of the advantages of blockchain decentralization, high reliability, and low cost to transfer and store users image information securely. Security analysis proves that the solution can resist theft attacks and ensure the security of user image information during transmission and storage.