$BTC 1. Bitcoin (BTC) is the first decentralized digital currency, launched in 2009 by an anonymous entity known as Satoshi Nakamoto.

2. It operates on a peer-to-peer network, allowing users to send and receive money without intermediaries.

3. Bitcoin's supply is limited to 21 million coins, creating scarcity and influencing its value.

4. It is often seen as "digital gold" and a hedge against inflation by investors.