ABSTRACT
In every direction, there is a lot of noise about the Internet of Things (IoT) and its impact on everything. The technology of IoT is a huge network of interrelated devices and human beings that record and transmit the data to each other about the way they are used and about their surroundings. Conventional networks of IoT rely on a concentrated structure with finite scalability among other negative aspects. Hence, blockchain can deal with the IoT by providing many benefits and security to the data of the network. Globally, with the growth of technologies, companies and organizations are relying upon their data systems. Issues about missing or robbing of data are becoming a constant in news headlines because organizations depend more and more upon their computer systems to collect confidential information of customers. Therefore, in this chapter, the detailed background of IoT is introduced. Then, the problems of IoT are illustrated where blockchain can act as a rescue for security issues of IoT. Furthermore, the blockchain is described in detail with an introduction to its architecture, major features, approaches of data secrecy, and mining process. Moreover, an idea of IoT based on blockchain with applications, security, and confidentiality is described, and finally, disputes of blockchain are illustrated. The main motive of this chapter is to focus on the open research issues and directions of possible upcoming research on blockchain for IoT, as well as on the services of security and confidentiality for data using blockchain.
