What Is Bitcoin?
Bitcoin (BTC) is the world's first decentralized cryptocurrency, created in 2009 by the pseudonymous developer Satoshi Nakamoto. It operates on a peer-to-peer network without central authority, using proof-of-work mining to validate transactions and secure the network.
How Bitcoin Works
Bitcoin transactions are recorded on a public blockchain — a distributed ledger maintained by thousands of nodes globally. New bitcoins are created through mining, where computers compete to solve cryptographic puzzles. The supply is capped at 21 million BTC, with the mining reward halving approximately every four years.
Why It Matters for Traders
Bitcoin is the benchmark asset of the entire crypto market. BTC dominance (its share of total crypto market cap) drives market cycles — rising dominance typically signals risk-off sentiment, while falling dominance indicates capital rotation into altcoins. Bitcoin's price action sets the tone for the broader market, making it the single most important asset to track.