$BTC Bitcoin (BTC) is a decentralized digital currency, created in 2009 by an unknown person or group using the pseudonym *Satoshi Nakamoto*. It operates on a peer-to-peer network without the need for a central authority like a bank. Bitcoin transactions are verified by network nodes through cryptography and recorded on a public ledger called the blockchain. It has a limited supply of 21 million coins, making it deflationary in nature. Bitcoin is often used as both a digital currency and a store of value, sometimes referred to as "digital gold."