Live market capitalisation, volume and Bitcoin's share of the entire crypto market.
Market capitalisation is the simplest way to size Bitcoin as an asset: the live price multiplied by the ~19.9 million coins in circulation. The figure above updates every minute, alongside the metrics that give it context — trading volume, Bitcoin's dominance of the whole crypto market, and how far price sits from its all-time high.
A single coin's price is arbitrary — it depends on how many units exist. Market cap normalises that, which is why comparisons with gold, equities and other cryptocurrencies are always made in cap terms. It approximates the total value the market assigns to the network.
Bitcoin's supply schedule is fixed: 21 million coins ever, over 19.9 million already mined, with issuance halving every four years. Unlike most assets, future dilution is precisely known, so cap growth must come from price, not printing.
Total crypto market cap tells you how much capital is in the asset class; dominance tells you where it sits. Bitcoin-led rallies (cap up, dominance up) historically precede altcoin rotations (cap up, dominance down) — the pair above lets you spot which phase you're in at a glance.
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