Blockchain Technology: Fundamentals and Applications provides a comprehensive introduction to the principles, architecture, and practical applications of blockchain technology. The book explains core concepts such as distributed ledger systems, cryptographic foundations, consensus mechanisms, smart contracts, decentralized applications (DApps), and blockchain security in a clear and structured manner. It also explores real-world applications across industries including finance, healthcare, supply chain management, education, governance, agriculture, and the Internet of Things (IoT). Designed for undergraduate and postgraduate students, researchers, academicians, and industry professionals, this book bridges theoretical foundations with emerging trends, enabling readers to understand both the technical and business potential of blockchain technology in the digital era.