The blockchain is a decentralized ledger of all transactions across a peer-to-peer network. Using this technology, participants can confirm transactions without the need for a central certifying authority. The blockchain framework creates a trusted public or private ledger to store information which cannot be altered without recording the changes made. One of the key features of Block Chain is that this digital ledger is accessible across a multitude of business/organizations, systems and computers and is not bound to be kept in a single place. .