Too Long; Didn't Read
The rise of blockchain technology is the main reason for talking about it. It is a Decentralized, distributed, digital ledger of transactions that is duplicated and distributed across all the computer systems on the blockchain(which are called nodes) instead of being stored in a single centralized organization or server. At present time the whole finance of a country or world depends on these centralized authorities making it very critical and to be easily tampered with. Bitcoin was the invention of this technology, but it wasn’t proposed long ago than Bitcoin.