Data security has become critical since it is now an organization’s most valuable asset. Cloud computing has its own benefits and drawbacks when it comes to data storage. Cloud storage, or data kept on the cloud, is susceptible to various dangers because the owners of the data are often ignorant of fundamental information about how their data is being held or what policies are being adhered to. In addition to providing data confidentiality and integrity features to address security concerns with cloud storage, the emerging blockchain technology also introduces the concept of decentralization. In this paper, we first describe the security problems with existing cloud storage, then go over blockchain technology in brief and highlight the drawbacks of different models that have been suggested for using blockchain for safe cloud data archiving. Finally, we outline the problem of the research.