This book brings together peer-reviewed research contributions exploring cutting-edge developments in AI, big data, and blockchain-fields that are transforming industries today. Written by leading experts, the chapters showcase advances in: AI methodologies and modelling-including machine learning and deep neural networks Big data analytics to uncover hidden patterns and insights Blockchain-based data management methods, privacy-preserving architecture and trust-enhancing systems Security threat detection, fraud prevention and privacy-preserving applications With applications ranging from industrial-scale systems to real-world, high-stakes environments, this book serves as an essential resource for: Researchers exploring next-generation AI, blockchain and data science approaches Practitioners and developers implementing enterprise-scale solutions Industry professionals and policy-makers seeking best practices in secure, transparent and accountable computing This book offers both theoretical depth and applied relevance, making it a valuable reference to guide innovation in data-driven and decentralised systems. .