$BTC Bitcoin (BTC) is the first and most well-known cryptocurrency, created in 2009 by an unknown person or group using the pseudonym Satoshi Nakamoto.

Here are some key points about Bitcoin:

1. Blockchain Technology ⛓️: Bitcoin transactions are recorded on a public ledger called the blockchain, which is secure, transparent, and can't be changed.

2. Limited Supply ⏳: Only 21 million BTC will ever exist. This scarcity helps increase its value over time.

3. Mining ⛏️💻: New bitcoins are created through a process called mining, where powerful computers solve puzzles to confirm transactions.

4. Volatility ⚡📉📈: Bitcoin’s price can go up and down quickly — good for traders, but risky without caution.

5. Store of Value 💰🔒: Often called “digital gold,” Bitcoin is used by many as protection against inflation.

6. Adoption 🌍💳: Some businesses accept Bitcoin, and it’s used globally for fast, low-fee money transfers.