The growing reliance on distributed systems in various industries necessitates robust data security and efficient management solutions. This paper investigates the application of blockchain technology to enhance data security and management in distributed systems. The objective is to leverage blockchain's decentralized, immutable ledger capabilities to ensure data integrity, transparency, and traceability. The methodology involves integrating blockchain protocols with existing distributed system architectures, followed by the implementation of smart contracts to automate and secure data transactions. Detailed analysis is conducted on how blockchain can address common security vulnerabilities such as data breaches and unauthorized access. The results show that blockchain integration significantly improves data security, reduces operational risks, and streamlines data management processes. Case studies from sectors like supply chain management and healthcare illustrate the practical benefits and scalability of this approach. The conclusion emphasizes the transformative potential of blockchain technology in revolutionizing data management and security in distributed systems, advocating for its wider adoption and further exploration of advanced blockchain solutions.

Blockchain Technology, Data Security, Distributed Systems, Smart Contracts, Data Management, Decentralized Ledger, Cybersecurity, Supply Chain Management