Blockchain Technology: Introduction, Integration, and Security Issues with IoT
Sarjana Singh, Sumit Kumar
Abstract
Blockchain (BC) was mainly introduced for secure transactions in connection with the mining of cryptocurrency bitcoin (BTC). This chapter discusses the fundamental concepts of BC technology and its components, such as block header, transaction, smart contracts (SCs), etc. BC uses the distributed databases, so this chapter also explains the advantages of distributed BC over a centrally located database. Depending on the application, BC is broadly categorized into two categories; permissionless and permissioned. This chapter elaborates on these two categories as well. Further, it covers the consensus mechanism, and it is working along with an overview of the Ethereum (ETH) platform. BC technology has been proved to be one of the remarkable techniques to provide security to IoT devices. An illustration of how BC will be useful for IoT devices has been given. A few applications are also illustrated to explain the working of BC with IoT.