The blockchain is an incorruptible digital ledger of economic transactions that can be programmed to record not just financial transactions but virtually everything of value.Blockchain can be termed as a decentralized public ledger, it was originally developed in 2008 as an underlying network on which the bitcoin transactions could be made. Now blockchain has emerged and is powering many digital assets transactions in addition to the cryptocurrencies.It's a continuously growing list of records i.e. blocks. A block is a record of new transaction, once each block is completed it's added to the chain thus creating a chain of blocks. Blocks are recorded and added to it in a chronological order, each node automatically downloads copy of the blockchain. All these blocks are linked and secured using cryptography.Each block contains a cryptographic hash of the previous block, timestamp and transaction data. All these are linked to prevent any tampering and strengthens the verification process when assets are moved.