$BTC Bitcoin (BTC) is a decentralized cryptocurrency created in 2009 by a person or group under the pseudonym Satoshi Nakamoto. It operates without intermediaries, utilizing blockchain technology to securely and transparently record transactions. Users can send and receive bitcoins worldwide with low fees. Its supply is limited to 21 million units, making it scarce and potentially valuable. Over time, it has gained popularity as a store of value and an alternative to traditional money. However, its price is volatile, and its adoption still faces regulatory and technical challenges in various countries.