Textbook in PDF format This book explores the transformative potential of blockchain technology and shows how blockchain can promote equitable access to resources and bridge societal gaps. It examines blockchain's role in enhancing transparency, security, and decentralisation across various sectors and in society. The book addresses both the advancements and challenges of blockchain, providing practical use cases to understand the opportunities, limitations, and innovative applications of blockchain, envisioning a future where this technology drives significant societal change. Blockchain is a distributed ledger technology that enables decentralised data storage across several computers (nodes). Blockchain comprises a block’s series, and each block plays the role of a public ledger, having a list of transactions, a timestamp, and a link to the block before it. Because of this structure, it is very difficult to change the data without also changing all of the blocks that come after it, which would require agreement from most of the network. Since a network of nodes uses a consensus method to validate and record transactions, the decentralised nature of blockchain eliminates the need for central authority. This decentralisation guarantees the security, integrity, and transparency of the data recorded on the blockchain when combined with cryptographic methods. In the modern age, symmetric ciphers such as Data Encryption Standard (DES) and Advanced Encryption Standard (AES) were designed by deploying fiestel and substitution-permutation networks, respectively. Showcases practical use cases in healthcare, finance, governance, supply chain management, and humanitarian aid Covers decentralized finance (DeFi), financial inclusion, asset tokenization, and impact investing Investigates blockchain's role in environmental conservation, charitable donations, and ethical considerations Examines scalability, interoperability, security, and regulatory concerns and discusses self-sovereign identity and personal information control through blockchain Offers insights for policymakers on creating a conducive environment for blockchain while safeguarding public interests This is a reference for scholars and practitioners interested about the impact of blockchain. General Introduction Section 1 Healthcare transformation Harnessing Blockchain Technology for Enhanced Healthcare Data Management and Analytics Towards a Unified Framework for Blockchain‑IoT Integration: Architectural Insights and Research Challenges Section 2 Integration with emerging technologies Understanding Blockchain Technology Adoption in Human Resource Management: A Technology Acceptance Model (TAM) Approach Blockchain Technology’s Key Components, Security Challenges, and Its Evolving Role in Modern Digital Infrastructure Security Mechanisms and Challenges in Blockchain Technology: A Comprehensive Framework for Addressing Threats and Enhancing Integrity Section 3 Revolutionizing Finance The Transformative Impact of Blockchain Technology on the Financial Sector Significance of Cryptography Techniques in Blockchain Leveraging the Internet of Things and Blockchain for Developing Intelligent Learning Models Blockchain Innovation in IOT‑Based Healthcare: Issues and Future Opportunities Blockchain‑Driven Supply Chain Management in Industry 5.0: Enhancing Efficiency and Sustainability Section 4 Societal and industrial impacts Healthcare Security and Privacy Concerns in the Blockchain Network: A Review Implementing Blockchain in the Industrial Internet of Things (IIOT)‑Enabled Metal Casting The Role of Blockchain in Drug Traceability and Data Integrity Boost Financial Efficiency and Security with Blockchain Harnessing Blockchain for Biotechnology: Current Applications, Challenges, and Future Opportunities Section 5 Security and cryptography Blockchain and Artificial Intelligence in Financial Industry 4.0: Enter the World of Digital Transformation International Payments Using Blockchain: A Comprehensive Analysis of Efficiency, Security, and Feasibility Blockchain‑Driven Solutions for Energy Trading and Sustainability in Microgrids Blockchain for Social Impact: Shaping Future Management Practices Planting the Seeds of Reform: The Effect of Blockchain on Seed Management