Blockchain For Secure Data Storage

Abstract

Data security has become one of the major concerns in today’s digital world. Conventional storage systems often rely on centralized architectures that are prone to data breaches, single points of failure, and unauthorized modifications. Blockchain technology, characterized by decentralization, immutability, and cryptographic security, presents a transformative solution for secure data storage.This paper investigates the application of blockchain technology to design secure, resilient, and auditable data storage systems. We analyze the security properties of distributed ledger technologies, propose an architecture combining permissioned blockchains with off-chain storage (e.g., distributed file systems and object stores), and present an end-to-end protocol for confidentiality, integrity, availability, and access control. We evaluate threats, performance trade-offs, and real-world applicability.  This paper explores the integration of blockchain in data storage systems, its architecture, mechanisms for ensuring data confidentiality and integrity, and the challenges associated with scalability, privacy, and cost.