Blockchain Technology for Enhancing Data Integrity and Security

The rapid growth of digital systems has revolutionized modern life but also introduced critical vulnerabilities in data integrity and security. Blockchain technology, as a distributed ledger system, offers transformative solutions by ensuring trust, transparency, and tamper-resistance in data management. This chapter explores blockchain's theoretical foundations, practical applications, and associated challenges. Key attributes such as decentralization, immutability, and cryptographic security are examined, alongside real-world applications in sectors like healthcare, finance, and cybersecurity. The discussion addresses scalability, energy consumption, and regulatory hurdles, while highlighting innovations like quantum-resistant cryptography and blockchain-AI convergence. Through theoretical insights, case studies, and actionable recommendations, this chapter underscores blockchain's potential to fortify data systems, paving the way for a secure digital future.