Overview

The goal of this book is simple: to provide a starting point for understanding blockchain technology, what it is, how it works, how it evolves, and how to evaluate the systems built upon it. The purpose is not to promote blockchain, nor to dismiss it, but to explain it clearly. Blockchain is often described in fragmented terms as cryptocurrency, decentralization, innovation, or disruption. Yet at its core, it is a system built from cryptographic, computational, economic, and governance mechanisms working together to enable distributed coordination without centralized control. Understanding blockchain requires moving beyond surface-level definitions and examining how these components interact in practice. This book was developed during a remotely held course of study in blockchain technology conducted between October 2025 and April 2026. Over twenty sessions, students explored the foundational principles, technical mechanisms, and broader implications of blockchain systems. The sessions were designed as a beginner-friendly but technically grounded introduction that progresses from foundational concepts to more advanced systems and evaluation frameworks. First, the core building blocks of blockchain technology are established, how data is structured, how cryptography secures it, and how consensus enables agreement in distributed environments. Then, early implementations and programmable systems are presented, showing how these foundations evolve into more complex blockchain architectures and real-world applications. As the book progresses, it explores how blockchain systems expand beyond simple value transfer into programmable logic, decentralized applications, and on-chain markets. It examines the emergence of more advanced systems and execution models, as well as the challenges that arise within them, including adversarial behaviors such as Maximal Extractable Value (MEV). The later sections of the book focus on how these systems continue to evolve, both in terms of technical architecture and practical application. It introduces emerging approaches to development, automation, and system design, and examines how new tools and methodologies, such as formal verification, aim to improve correctness, reliability, and trust in increasingly complex environments. Finally, the book introduces the Blockchain Maturity Model (BMM), developed by the Government Blockchain Association (GBA), providing a structured framework for evaluating blockchain systems based on their reliability, readiness, and overall maturity. This completes the progression from understanding how blockchain systems work to assessing how well they perform in real-world conditions. For those interested in sharing comments, asking a question, extending an invitation to engage, or to make a donation, please contact via email me@morozov.me or telegram @emmorozov Coleman Goodsmith deserves all credit for his fast learning and recording the sessions, then turning them into the flowing manuscript, then creating the art. This book is unlikely to have seen the light of day without his talent for writing and without his patience. Special thanks to Victor Storozhenko, software architect and engineer with deep expertise in delivering complex enterprise systems, including AI-native designs and tamper-evident immutable evidence platforms for public-sector validation, for his help with AI fact checking, and much more. And last, but not the least, my gratitude goes to brilliant minds behind the solutions referenced in this book, as well as to the authors of BMM, for their support and for their patience with me. Happy reading! Eugene Morozov, CPA.MS. April 20, 2026

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