What is Bitcoin?
Bitcoin is a digital currency (also called crypto-currency) that is not backed by any country’s central bank or government. Bitcoins can be traded for goods or services with vendors who accept Bitcoins as payment- TechTarget
Bitcoin is a digital currency created in 2009. It follows the ideas set out in a white paper by the mysterious Satoshi Nakamoto, whose true identity has yet to be verified. Bitcoin offers the promise of lower transaction fees than traditional online payment mechanisms and is operated by a decentralized authority, unlike government-issued currencies- Investopedia
Bitcoin is a form of digital currency – a new form of money, essentially – that is tradable throughout the world. It is not an official currency, however, which means that it operates without the involvement of banks or clearinghouse- shopify