Sarcouncil Journal of Multidisciplinary

Abstract: This technical article explores blockchain technology's applications beyond cryptocurrency in the realm of product and system security. Blockchain's inherent properties—decentralization, immutability, and cryptographic verification—provide significant advantages in securing various digital ecosystems. The article examines how these architectural characteristics create robust solutions for data integrity challenges, enhance resilience against distributed denial-of-service attacks, and strengthen software supply chain security. Further applications in digital identity management demonstrate blockchain's potential to revolutionize self-sovereign identity systems, dramatically reducing exposure of personal information while maintaining verification capabilities. In healthcare contexts, blockchain enables privacy-preserving data management that balances accessibility with stringent regulatory requirements. Through these implementations, blockchain fundamentally transforms security paradigms from reactive defense mechanisms to proactive architectural resilience, creating systems with security built into their foundational structure rather than added as an afterthought.