Efficient and secure data storage system on the cloud using blockchain

The exponential increase in the size of the blockchain is a major reason for the decentralization of the blockchain. Also the major cause in using potential applications and big data. The permanent loss of a blockchain occurs when the attacker obtains all details of blocks. In this paper, we prove that each time new blocks are generated for storing the user information in encrypted data by which the attacker does not have access. As a result, the storage must be decreased on a regular basis. The storage should be continuously reduced in comparison to the conventional design, making the blockchain more suitable for information-heavy applications.