  Public Cloud Computing has become a fundamental part of modern IT
infrastructure as its adoption has transformed the way businesses operate.
However, cloud security concerns introduce new risks and challenges related to
data protection, sharing, and access control. A synergistic integration of
blockchain with the cloud holds immense potential. Blockchain's distributed
ledger ensures transparency, immutability, and efficiency as it reduces the
reliance on centralized authorities. Motivated by this, our framework proposes
a secure data ecosystem in the cloud with the key aspects being Data Rights,
Data Sharing, and Data Validation. Also, this approach aims to increase its
interoperability and scalability by eliminating the need for data migration.
This will ensure that existing public cloud-based systems can easily deploy
blockchain enhancing trustworthiness and non-repudiation of cloud data.
