$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, introduced in 2009 by an anonymous creator known as Satoshi Nakamoto. It operates on a decentralized blockchain network, where transactions are recorded transparently and cannot be altered. Bitcoin is limited to a supply of 21 million coins, making it a scarce digital asset. It has gained widespread adoption as a store of value, often referred to as "digital gold." BTC can be used for peer-to-peer transactions without intermediaries, offering low fees and fast transfers across borders. Over time, Bitcoin has become a key part of the financial world and investment portfolios.