The rapid increase in digital data has led to heavy reliance on centralized cloud computing. Consequently, users are exposed to critical vulnerabilities, including unauthorized access, privacy invasion, and single points of failure. This study proposes a cloud storage system that is trustless to address these challenges that have persisted. The underlying methodology utilizes distributed data hosting based on the InterPlanetary File System (IPFS) and decentralized access control through Solidity smart contracts. Under this architecture, file metadata is stored safely on an unalterable blockchain registry, and the media files are stored off-chain. These contracts are automatically run by granular access controls like specific public and private visibility modes. At any point, no outside intervention of a third party is needed. The system was checked during the testing time in terms of a functional accuracy in regards to a secure storage, verifiable retrieval, and instant revocation of permissions. According to the key results, the elimination of intermediary control, prevention of unauthorized access to data attempts, and high data availability are achieved. In conclusion, this shows that a combination of programmable smart contracts and peer-to-peer storage will provide a potentially scalable and secure alternative to the traditional cloud architecture. This leads to a considerable improvement in user data sovereignty and systemic resilience as a whole.

This paper successfully developed and test a decentralized cloud storage system that combines InterPlanetary File System (IPFS) and Solidity smart contracts successfully. By shifting from centralized data storage to a peer-to-peer network, in- herent vulnerabilities such as single points of failure, privacy violations, and unauthorized access to data were effectively eliminated. The implementation process led to secure off-chain data hosting, and autonomous implementation of immutable access control policies through on-chain smart contracts. Moreover, granular control over permission, form of public and private visibility, was provided to the user in a seamless manner. As a result, the users regain full control over their data without any third party intermediaries.

[1]“Decentralized and Secure Access Control Model for Multi-Cloud Data Storage,” IIETA Journal, 2025. DOI: 10.18280/ijsse.150203. [2]M. R. Haque, S. Islam Munna, S. Ahmed, M. T. Islam, M. M. Hassan Onik, and A. A. Rahman, “An Integrated Blockchain and IPFS-Based Solution for Secure and Efficient Source Code Repository Hosting,” PLoS One, 2025. [3]S. R. Bandanadam et al., “Decentralized Big Data Auditing Scheme for Cloud Storage Based on Blockchain with Adaptive EI-GAMAL and Gazelle Optimization,” Journal of Computer Communication and Cybernetics Engineering, 2025. [4]B. P. Chintal et al., “Secure Decentralized Storage System Using Blockchain and IPFS,” SSRN Electronic Journal, 2025. [5]S. C. Prabanand et al., “Advanced Financial Security System Using Smart Contract in Private Ethereum Consortium Blockchain,” Nature Scientific Reports, 2025. [6]S. Tafeem and S. Jennifer Mary, “Decentralized Cloud Storage Archi- tecture Using Block Chain and Smart Contracts,” International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2025. [7]“Blockchain Security: Threats, Vulnerabilities and Countermeasures – A Review,” SSRN Electronic Journal, 2025. [8]G. Danezis et al., “Walrus: An Efficient Decentralized Storage Network,” arXiv Preprint, arXiv:2505.05370, 2025. [9]A. R. Kandlakunta et al., “Cloud-Based Blockchain Technology for Data Storage and Security,” SSRN Electronic Journal, 2024. [10]X. Cong et al., “Research on IPFS Image Copyright Protection Method,” ScienceDirect, 2024. [11]W. Peng et al., “An Efficient Blockchain-Based Framework for File Sharing,” Nature Scientific Reports, 2024. [12] S. Chaudhary et al., “A Smart Contract and IPFS-Based Framework for Secure EV Synchronization at Charging Stations,” ScienceDirect, 2024. [13]A. A. G. Agung et al., “Smart Contract and IPFS Decentralized Storage for Halal Certification Process,” Journal of Information Visualization (JOIV), 2024. [14]“Blockchain-Based File Sharing System – A Hybrid Approach,” IRJMS, 2024. [15]H. S. Musa et al., “Survey on Blockchain-Based Data Storage Security for Mobile Applications,” PubMed Central (PMC), 2023. [16]S. Ray, K. N. Mishra, and S. Dutta, “Security Enhancements in M-Health Using Distributed Ledger Technology based Digital Locker System,” International Journal of Information Technology, vol. 16, pp. 4253-4271, 2024. [17]A. Kumar et al., “Mapping the trajectory of blockchain technology and non-fungible tokens: a comprehensive bibliometric analysis,” Interna- tional Journal of Information Technology, 2024. DOI: 10.1007/s41870- 024-02204-2.

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