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The Blockchain is an invention of a person or group of people led by Satoshi Nakamoto. It is a growing list of records, called blocks, which are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. Don & Alex Tapscott The Authors of Blockchain Revolution (2016) went a step further to define Blockchain Technology as follows “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 is a technology in which data is not changeable. Immutable data is distributed across different servers -- decentralized -- and data is secured through cryptography.


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