The overarching aim of smart city architecture is to harmonize real-time response applications, but the complex cyber-physical environment introduces security challenges that could potentially compromise the data of individuals, systems, and processes. Although numerous centralized and decentralized architectural approaches have emerged to support the realization of smart cities, persistent concerns center around issues such as digital ownership of IoT assets, traceability, scalability, security services, platform compatibility, and resource management. Non-fungible tokens (NFTs) represent a shift in ownership and trade perception in the digital world. While NFTs are renowned for representing unique and non-interchangeable data units on a digital ledger, their potential to digitize IoT assets in the cyber-physical systems of smart cities remains underdeveloped. Non-Fungible Tokens (NFTs) in Smart Cities: Advancements and Security Challenges examines NFT-based mechanisms by introducing new attributes and functions to define assets which results in the identification of the IoT assets in the cyber-physical systems (CPSs) for smart cities. Additionally, it dives into NFTs and their broader applications. Covering topics such as decentralized principles, urban connectivity, and deepfakes, this book is an excellent resource for technology developers, computer engineers, urban planners, policymakers, professionals, researchers, scholars, academicians, and more.