The national Institute of standards and technology defines block chain as a tamper evident and tamper resistant digital ledger Simplement it in the distributed fashion that is without a central repository usually without a central authority like a bank company or government at its basic level eight enables a community of users to record transactions in a shared ledger within that community search that under normal operation of the blocks in network no transaction can be changed once published--- Support this podcast: https://anchor.fm/nirmit-verma/support