Utilization of Blockchain Technology in Cloud Storage Systems for Enhancing Data Integrity and Preventing Unauthorized Modifications through Decentralized Validation

Abstract

This study investigates the integration of blockchain technology into cloud storage systems to enhance data integrity and prevent unauthorized modifications through decentralized validation mechanisms. The primary objective is to address vulnerabilities in traditional cloud environments, including single points of failure and reliance on trusted third parties. Using a mixed-methods approach—comprising simulation-based experiments on Hyperledger Fabric and analysis of publicly available datasets from AWS S3 up to 2022—the research evaluates performance metrics such as verification latency, storage overhead, and integrity success rates. Results indicate that blockchain-enhanced systems can reduce unauthorized access incidents and improve verification efficiency compared to conventional methods. The conclusions highlight the potential of decentralized ledgers in creating secure, tamper-resistant cloud storage, offering implications for enterprise-scale applications. This study contributes to the development of scalable validation protocols and informs the design of hybrid cloud-blockchain architectures.