Textbook in PDF format Blockchain is being touted as the next Internet revolution akin to the worldwide web and e-commerce. This unique compendium lays the foundations for the conceptual understanding of the components necessary to build blockchain-based applications. The volume provides more than 100 illustrations and examples of these applications in various business domains. Hands-on demonstrations on software will help to install and explore the tools and techniques discussed. The useful reference text benefits any existing businesses that want to introduce blockchain in their operations. The book is organized into four parts. Each part has carefully chosen chapters covering essential concepts and applications. Each chapter is a stand-alone unit with references to other relevant chapters. Below are brief descriptions of the four parts: Blockchain, the new frontier in technology, discusses trust in a trustless world by introducing decentralized identifiers, self-custody wallets, P2P transactions, smart contracts, DApps, and web3 which connects all elements. Cryptocurrency, the new money, explores the cryptocurrency, tokens, digitization of assets, scalability for real-world applications, decentralized governance and the policies and regulation covering crypto assets. DeFi, Protocols and Platforms reviews the crypto ecosystem where users are able to explore and participate through risk-averse, centralized crypto exchanges and DeFi protocols, platforms and services. Web3 Imperative offers a roadmap for businesses to get started with the web3 ecosystem and explains a four-level plan for adoption. This part discusses the relevance of web3 in three application domains: government, autonomous systems, and healthcare