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BlockChain is a distributed database that maintains a continuously-growing list of ordered records called blocks. This technology underlying <a href="https://en.wikipedia.org/wiki/Bitcoin"><strong>Bitcoin</strong></a> and other cryptocurrencies. It is a public ledger of all Bitcoin transaction. These blocks are added in a chronological order. In order to deploy a blockchain application, you need a distributed Hyperledger blockchain on your choice of infrastructure (on-premise or cloud).