The book Blockchain Technology offers a detailed introduction to one of the most powerful innovations of the digital era. It starts with the foundations of cryptography and distributed systems, gradually leading readers into the core principles of blockchain. It explains how data is stored in blocks, linked securely, and maintained across peer-to-peer networks, ensuring decentralization, immutability, and transparency. Concepts such as digital signatures, hashing, and consensus mechanisms are presented in a simple yet comprehensive manner. The book provides in-depth coverage of Bitcoin and cryptocurrencies, including mining processes, wallets, hard forks, and Ethereum’s ecosystem. It also explores advanced topics like the Ethereum Virtual Machine, Merkle trees, and blockchain’s impact on digital currencies. A dedicated section introduces Hyperledger frameworks and Solidity programming, showing how smart contracts can automate agreements and revolutionize industries. These technical insights are supported with practical coding concepts. Moving beyond theory, the book focuses on real-world applications in finance, supply chain management, healthcare, and governance. It highlights how blockchain enhances security, efficiency, and accountability across sectors. At the same time, it does not overlook challenges such as scalability, energy consumption, interoperability, and regulatory uncertainty. Readers are encouraged to critically evaluate both the strengths and limitations of blockchain. Future-oriented discussions highlight blockchain’s role in decentralized finance (DeFi), digital identity, Internet of Things (IoT), and new governance models. These forward-looking sections prepare readers for upcoming developments in the field. Illustrative examples, diagrams, and case studies make complex concepts easy to understand, ensuring that the text remains engaging and accessible to learners of all levels. Designed for students, educators, researchers, and professionals, this book bridges the gap between academic knowledge and real-world application. It provides both theoretical depth and practical clarity. Ultimately, Blockchain Technology presents blockchain not just as a technical system but as a socio-economic disruptor. It shows how the technology has the potential to reshape industries, institutions, and even the way society manages trust and value.
About the Authors’
Ms. M. Princy Usha is a passionate educator and researcher in the field of Computer Science and Engineering. With extensive experience in teaching and mentoring, she is committed to fostering innovation, academic excellence, and value-based learning. She actively contributes to technical development through conferences, workshops, and research publications, and continues to inspire students through her dedication to the teaching profession. Her areas of interest include Cloud Computing, Artificial Intelligence, and Computer Networks. She has guided student teams in various national-level hackathons and received appreciation for her mentorship. She has also served in several academic leadership roles and organized faculty development programs. Her professional journey reflects a deep commitment to empowering the next generation of computing professionals.
Mrs. A. Anorelin graduated with a degree in Information Technology from St. Xavier’s Catholic College of Engineering. She obtained her M.E. degree from Anna University, Chennai. She has six years of teaching experience and is currently working as an Assistant Professor in the Department of Computer Science and Engineering at St. Xavier’s Catholic College of Engineering, Chunkankadai. She has published five papers in both international and national conferences. Additionally, she has actively participated in various seminars, workshops, and faculty development programmes. Her areas of interest include Cloud Computing and Deep Learning, and she has guided several undergraduate student projects in these domains. She has also published a patent, reflecting her commitment to innovation and interdisciplinary research in the fields of artificial intelligence and healthcare technology.
Ms. D. Betteena Sheryl Fernando is a dedicated academician with a strong foundation in Computer Science and Engineering. She holds a Bachelor’s degree in Computer Science and Engineering from St. Xavier’s Catholic College of Engineering and a Master’s degree in the same field from Jeppiaar Engineering College, Chennai. She is currently pursuing her Ph.D. at Anna University, with a research focus on Data Analytics. She is currently working in St. Xavier’s Catholic College of Engineering, Chunkankadai, Nagercoil, Kanyakumari District. With over 8 years of teaching experience, Ms. Betteena has been actively involved in both academic and administrative roles. She has contributed to the academic community through various publications in reputed international journals and participation in conferences at both national and international levels. She has organised various events such as workshops and guest lectures. She has handled various subjects like C Programming and basics, Object Oriented Programming, Compiler Design, Theory of Computation, Computer Networks, Cloud Computing, and Cloud Services Management. She has guided various undergraduate projects. Ms. Betteena has a passion for continuous learning and has completed several NPTEL and SWAYAM online certification courses. Her areas of interest include Programming Languages, Machine Learning, and Deep Learning.
Ms. Swetha Menon.N.P is an academic professional with over 13.5 years of experience in fashion and textile education. She currently serves as an assistant professor at SRM Institute of Science and Technology, Ramapuram. Swetha holds an MSc in Textile Science and Fashion Designing and is pursuing her PhD. Her expertise includes pattern making, draping, curriculum development, and studentcentered teaching. She has published in SCI and SCOPUS journals and holds a granted design patent. A frequent conference presenter, she has delivered talks nationally and internationally. Swetha has also completed numerous online certifications in fashion, marketing, psychology, and AI.
Prof.(Dr.) Rajeev Yadav is a seasoned academician with over 25 years of teaching and research experience in the field of Computer Science and Engineering. He currently serves as Professor and Dean Academics at Arya College of Engineering, Jaipur. He holds a wide range of academic qualifications, including B.Tech., dual M.Tech. degrees (CSE and AIML), Ph.D. (CSE), MBA, M.Phil. (Management), and multiple postgraduate diplomas in law, finance, journalism, and library science, along with LLB and LLM degrees. Throughout his career, Dr. Yadav has held various senior academic and administrative roles across reputed institutions in North India. These include positions such as Director, Principal, Dean Academics, Head of Department, and Professor in institutions across Rajasthan and Haryana. His research interests span Information Systems Audit, Software Engineering, Computer Networks, Artificial Intelligence, Soft Computing, ICTs, and innovative pedagogies. He is a Fellow of CSI and IITP, and a Life Member of ISTE, ISCA, and NHRD. Key Contributions: Guided 12 Ph.D. scholars in CSE, Published 85+ research papers in national and international journals, Authored 4 textbooks in Web Development, Theory of Computation, Software Engineering, Holder of 10 patents (Indian, UK, German) and Attended 60+ FDPs, conferences, and refresher courses.
