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  Block Chain

What is BlockChain?

Whenever the word blockchain is mentioned the first thought that comes to people's mind is CryptoCurrencies specifically 'bitcoin', and i used to have the same ideaology till i took the mlh challenge and went to learn about blockchain.

So what really is block chain?

block chain as the name describes is just a chain(group) of connected blocks. These blocks contain data of the previous block and the so on and thus a chain of connectivity gets formed.the data of the block is stored in a hash(cryptography) to keep it safe and once a block is formed it cannot be modified as it would destroy the chain since the other blocks contain the hash data of the previous blocks.

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