$BTC Bitcoin (BTC), the first and most well-known cryptocurrency, was created in 2009 by the pseudonymous Satoshi Nakamoto. It introduced a revolutionary concept: a decentralized, peer-to-peer digital currency without the need for banks or intermediaries. Bitcoin operates on a public ledger called the blockchain, where all transactions are transparently recorded.

The total supply is capped at 21 million coins, making it deflationary by design. Bitcoin’s scarcity, along with increasing demand, especially during bull markets, often drives its value up over time. However, it’s also highly volatile and influenced by macroeconomic factors, regulations, and investor sentiment.

While Bitcoin is often referred to as "digital gold," it's also used for remittances, hedging against inflation, and in some regions, as an alternative store of value. Despite its potential, scalability, energy use, and slow transaction speeds remain challenges.

If you're holding BTC and it's in profit, now may be a good time to sell, especially during market upswings or before major events that might cause a correction. Always track support/resistance levels and market news to time your moves wisely.