A technique of storing chronologically, the transactions data made in Bitcoin or another Cryptocurrency long chain of blocks, each one of them containing Data, Hash of the block and Hash of previous block making quite impossible to change data even if visible.
Blockchain originally known as Block chain was originally invented by a group of researchers to transfer digital data without being tempered or backdated.
It initially could not attract attention until 2009 when Satoshi Nakamoto builds digital Cryptocurrency called Bitcoin, implementing the concept of Blockchain. Bitcoin is a distributed ledger which can be hosted by anyone. It contains huge data visible to everyone and secured with Blockchain technology.
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