$BTC Bitcoin (BTC) is a decentralized digital currency created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto. Unlike traditional currencies, it operates without a central bank or single administrator. Transactions are verified by network nodes through cryptography and recorded on a public ledger called the blockchain. Bitcoin can be exchanged for goods, services, or other currencies, and is known for its limited supply of 21 million coins. Its value is highly volatile, attracting investors and speculators. As a pioneer in the cryptocurrency space, Bitcoin has influenced the development of thousands of other digital assets and blockchain technologies.