Book excerpt: Blockchain technology has garnered much attention in recent years from both academic and business spheres. At its core, this technology enables the implementation of smart contracts, automated software applications that execute agreements on a secure and distributed blockchain ledger. This ledger, known for its transparency, facilitates trustless transactions, eliminating the need for centralized authority. Smart contracts, stored on the blockchain, automate processes such as goods sales, contract execution, and currency exchange, making them accessible to all users. Blockchain Applications for Smart Contract Technologies aims to present an exhaustive compilation of academic and industrial endeavors that advocate for the integration of blockchain and smart contracts in various sectors. Beyond offering a comprehensive understanding of blockchain and smart-contract fundamentals, the book seeks to spotlight specific research themes within these domains. With dedicated sections focused on applications in healthcare, finance, e-government, the Internet of Things (IoT), energy, identity, telecommunications, Metaverse, non-fungible tokens (NFTs), and notary services, the book becomes a valuable guiding resource for scholars and professionals alike. This book caters to scholars, researchers, and industry professionals that want to apply blockchain and smart-contract technologies in their fields.