Blockchain-based data security in smart cities: Ensuring data integrity and trustworthiness

This chapter delves into the convergence of blockchain technology and data security in smart cities, emphasizing the critical importance of data integrity and trustworthiness. The exploration begins with an analysis of data security in dynamic smart city environments, highlighting the multifaceted aspects of data integrity. Blockchain's technical fabric, including consensus mechanisms and decentralized ledger architecture, is explored as a robust foundation for data security. The symbiotic relationship between blockchain and data governance, especially through smart contracts, is examined along with various data governance models. Practical insights into blockchain implementation in smart cities, tailored use cases, and innovative solutions to technical challenges are presented. Real-world case studies validate the tangible benefits of blockchain in reshaping data security paradigms. The chapter concludes with a technical perspective on emerging blockchain technologies, scalability enhancements, and the evolving landscape of data security. Positioned as a technical compass, the chapter offers practitioners, researchers, and enthusiasts a comprehensive understanding of blockchain's integral role in safeguarding data integrity and trust within smart city ecosystems.