$BTC

Here's a concise overview of **$BTC (Bitcoin)** in exactly 100 words:

**Bitcoin ($BTC)** is the first and largest decentralized cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It operates on a public, immutable ledger called the blockchain, secured by proof-of-work mining. Unlike traditional currencies, Bitcoin isn't controlled by any government or central bank. Its core value propositions include scarcity (capped supply of 21 million coins), censorship resistance, and potential as a digital store of value or "digital gold." While praised for its innovation and potential to disrupt finance, Bitcoin faces criticism for its high energy consumption, price volatility, and scalability challenges. It remains the dominant force in the crypto market.

**Key Points:** Decentralized, Blockchain, Scarce (21M), Proof-of-Work, Store of Value, Volatile, Market Leader.