Blockchain Technology is eminent in the modern era which is digitalizing the development of provinces. Contribution of the exploration is to provide adequate pilot age about secured and decentralized data exchange. In this paper we have discussed about the few application of block chain with using Bitcoin. Cryptocurrency is the future currency and it is progressing at a fast pace. For the advantage of high growth of block chain, it is also subjected to various drawback of hacking and data leaks as it’s also digital so we need proper security in every user. We are proposing the solution for the associating the each of the single cryptocurrency transaction as we as the cryptocurrency purchased with the digital user identify, using the concept of the block chain and for the transparency purpose we work on hashing algorithm for every users.