This book discusses fundamentals of blockchain technology, the issues in its development, potential applications, and its use in cryptocurrency. It also covers fintech, its status and applications, and the concepts related to a digital economy. Because this subject is vast and quickly changing, the book serves as a comprehensive introduction and background to anyone who is interested in blockchain technology and cryptocurrency. It has numerous references for anyone who is interested in further research. Features: Discusses basic concepts of blockchain technology, the issues in its development, potential applications, and its use in cryptocurrencyCovers Bitcoin issues, altcoins, MDLs, industrial applications, payment, regulations, and more