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.
How Perps Traders Use This
For CEX perpetual futures, treat bitcoin as context around entries, exits, and risk, not as a standalone signal. Pair it with funding, open interest, and liquidation heat so one indicator does not drive the whole book.
Formula and Worked Example
Example numbers only (not a live quote).
If your account equity is $10,000 and you risk 0.5% per idea, the cash risk budget is $50. With a stop 1% away from entry on a linear USDT-margined perp, notional size is about $5,000 before leverage optics. Size from stop distance first, then pick leverage that fits the margin mode.
Common Mistakes
- Treating a single print of bitcoin as a trade signal without checking funding, open interest, and your liquidation price.
- Mixing venue conventions (coin-margined vs USDT-margined, cross vs isolated) and reading the wrong mark.
- Copying example numbers from a glossary into live size without checking the current book depth and fee schedule.
- Ignoring related terms that change the meaning of the print on a given day.
