$BTC **\$BTC** refers to **Bitcoin**, the first and most well-known cryptocurrency. It is a decentralized digital currency that operates without a central authority, using blockchain technology to secure and verify transactions.

Key points:

* Symbol: **\$BTC**

* Limited supply: **21 million coins**

* Often used as a **store of value** or "digital gold"

* Highly volatile and influenced by market demand, news, and macroeconomic trends

\$BTC is commonly used in trading, investing, and discussions related to the crypto market.