The phrase block chain refers to a compilation of Cryptocurrency transactions. Cryptocurrency is a term used to define electronic, digital cash that falls outside of the jurisdiction of government regulations. It is independently managed by owners and is secured by digital mechanisms. The Block chain or Ledger, as it is frequently referred, contains and maintains the record of all the cryptocurrencies transactions that occur. It has its genesis in the release of Bitcoin in 2008 but has grown in practically and efficiency since being made public. The implementation process for block chain utilizes blocks. Each block notes and holds a transaction and that block is connected to the previous block. The subsequent transaction is held in another block and that block connected to the previous block; resulting in the creation of a chain based on the order of transactions.