Blockchain is an emerging technology that canradically improve security in transaction networks, it provides the basis for adynamic distributed ledger that can be applied to save time when recordingtransactions between parties, remove costs associated with intermediaries, andreduce risks of fraud and tampering. This book explores the fundamentals andapplications of Blockchain technology; the transparent, secure, immutable and distributeddatabase used currently as the underlying technology for Cryptocurrency.Decentralized peer-to-peer network, distributed ledger and the trust model thatdefines Blockchain technology will be explained. Components of Blockchain, itsoperations, underlying algorithms, and essentials of trust will be defined.Types of Blockchain networks including private and public Blockchain networkswill be introduced. Concepts of smart contracts, proof of work and proof ofstack will be clarified. The relationship between Blockchain technology,Internet of Things (IoT), Artificial Intelligence (AI), Cybersecurity andDigital Transformation will be explored in this book. Myths about Blockchainwill be exposed and a look at the future of Blockchain will be presented.