Bitcoin is a digital or virtual currency that was created in 2009 by an unknown person or group of people using the name Satoshi Nakamoto. It uses a decentralized system called blockchain to record transactions and manage the issuance of new units. Transactions are verified by network nodes through cryptography and recorded on a public distributed ledger called a blockchain. Bitcoin is unique in that there are a finite number of them: 21 million. Transactions are made directly between users w...
