$BTC Bitcoin (BTC) is the world's first and most popular cryptocurrency, created in 2009 by a person or group under the pseudonym Satoshi Nakamoto. It operates on blockchain technology, where every transaction is secure and stored in a decentralized manner.

Bitcoin is often called "digital gold" because it has a limited supply of 21 million coins, which helps drive its value over time.

It is popular for its fast transactions, low fees, and independence from government-controlled financial systems. Today, many major investors and institutions are adopting Bitcoin, further increasing its value and acceptance.