$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by a developer or group under the pseudonym Satoshi Nakamoto. It operates on a decentralized network based on blockchain technology, ensuring transparency and security without intermediaries. BTC has a limited supply of 21 million units, making it deflationary and attracting investors as a store of value, often compared to "digital gold." Its volatility attracts traders but also generates risks. Today, it is widely accepted as a means of payment and represents a global financial alternative, driving innovations such as DeFi and smart contracts.