In my opinion , to be honest : bitcoin will replace money .It will destroy bank .the currency system will fall down .Bitcoin is the future .This is the beginning of the industry 4.0 .Technology will change everything .People will be replaced by robot .Bitcoin is a worldwide crypto currency and digital payment system which is called the first decentralize digital currency, as the system works without a central repository or single administrator. It was created by one person or a group of people with the name Satoshi Nakamoto . it was released in 2009 as open-source software. The system is peer-to-peer and transactions take place between users directly, without an intermediary .These transactions are verified by network nodes and they are recorded in a public distributed ledger called a blockchain.