Bitcoin (BTC) ₿ is a decentralized cryptocurrency originally described in a 2008 whitepaper by a person, or group of people, using the alias Satoshi Nakamoto. It was launched soon after, in January 2009.
As the world’s first cryptocurrency, Bitcoin has come a long way in terms of its value. However, one does not have to buy an entire bitcoin as bitcoins can be divided into small units called satoshis, named after the creator. A satoshi is equivalent to 0.00000001 bitcoin.