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The blockchain technology is a distributed database for storing immutable growing records of transactions grouped into blocks, which are secured by cryptography, where each block is connected to other blocks, holding the hash of the previous block in the chain.

The blockchain technology is potentially an extremely disruptive technology that has the capability of reshaping all facets of society and its processes. It has revolutionized the means by which we communicate and exchange information by eliminating third-party providers and provisioning data security and integrity. Based on prospective capacities, the Blockchain revolution has been distributed into three classes: Blockchain 1.0, 2.0, and 3.0. This book focuses on Blockchain 3.0 (Blockchain Applications), especially projecting Internet of Things (IoT) applications in the fields of requirements engineering (RE), decentralized autonomous organization (DAO …