$BTC Bitcoin (BTC) is a type of cryptocurrency, also known as digital currency or virtual currency. It was created in 2009 by an individual or group of individuals under the pseudonym Satoshi Nakamoto.

Bitcoin operates on the blockchain technology, a decentralized ledger system that allows secure, transparent transactions without intermediaries. This means that no organization or central bank controls Bitcoin.

Some key features of Bitcoin:
- Decentralized: Not controlled by any organization.
- Anonymous: Transactions do not require personal information.
- Limited supply: The total number of Bitcoins will be capped at 21 million.