Blockchain is a decentralized public ledger whenever transaction is recorded and confirmed anonymously by members in the network multiple copies are kept across millions of computers/servers. So, it’s really difficult to change something without anyone else noticing. That’s what makes it so secure.
For e.g.: Suppose you have a spreadsheet the data in a blockchain is automatically stored in packets of information called ‘blocks’. New blocks
Are linked to older blocks hence the blockchain. The chain is continually updated so everyone has the same copy. Any slight change causes an error in the entire network. So, if someone were trying to change a transaction record they would have to hack every single computer on the network and change the same bits of information everywhere at the exact same time. Therefore blockchain is so secure. It is unhackable.
U hear about about Bitcoin which uses a new type of technology called blockchain. Bitcoin was the first application of blockchain.
Blockchain ≠ Bitcoin
Without blockchain cryptocurrency like bitcoin wouldn’t exist.
BUY Bitcoin with Blockchain wallet
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