A Blockchain-Enabled Framework for Secure and Transparent Data Sharing in Multi-Cloud Environments with Role-Based Access Control

Abstract

With the proliferation of multi-cloud architectures and the rise in cross-organizational data sharing, the need for a secure, transparent, and role-aware data management system is more critical than ever. Traditional access control models often lack trust,auditability, and interoperability. This paper proposes a blockchain-enabled framework integrated with Role-Based Access Control (RBAC) to ensure secure and transparent data sharing across multi-cloud environments. Blockchain's immutability and decentralized trust model enhance accountability, while RBAC facilitates fine-grained access permissions. The proposed framework bridges critical gaps in existing architectures by combining cryptographic integrity, distributed ledger technologies, and cloud-native access control models.