Inspiration: MLH LHD day daily task
What I learned :
Blockchain is a collection of records linked with each other which is strongly resistant to alteration by hacker due to strong encryption. it has a lot of purpose in transaction and widely used in Bitcoin currency. In blockchain, each block is linked to its previous block and transaction become invalid if there is any tempering or use of double spending by the user. blockchain is also very useful in finding out that data where the product quality or content has been changed as each block contains some data for example Walmart uses blockchain to keep record of product quality from suppliers to the product manufacture so it can recognize where the quality was changed call where any damage created in the product.
Blockchain is a decentralized distributed ledger and hence every user in this change is able to see the data from the previous block as well and these blocks cannot be modified even by the administrators which help in building trust and security of the transaction.
Blockchain is very safe and Secure as data cannot be tampered by hackers because each block is linked to the next and previous one, so if a hacker is able to hack one block by chance they would have to modify all the block to make it seem valid and it would take a lot of time and hence it would be found out by the miners who work invalidating the blockchain.
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