Everyone is talking about blockchain, in the past few it has been evolving as an alternative digital model having vast potential beyond bitcoin or other crypto currencies. It is the technique behind that can work to automate every online transaction with a good degree of trust. The concept of blockchain has energized the financial services industry globally. The concept has already brought a disruption in the financial industry. In this paper we try to understand what the technology is, what are consensus protocol that work behind it and how it is already affecting our lives. Also we try to find out the possible implications of using this technology that can shape our future and can prove to be another milestone in this digital era like the one Internet is.