BTC's share of total crypto market capitalisation. A key signal for market cycle positioning and capital rotation.
Bitcoin dominance measures Bitcoin's market capitalisation as a percentage of the total cryptocurrency market cap. It is one of the most widely watched metrics for understanding capital flows within the crypto ecosystem — specifically, whether investors are concentrating in Bitcoin or spreading capital across altcoins.
At Bitcoin's launch in 2009, dominance was effectively 100% as no other cryptocurrencies existed. As thousands of alternative coins launched over subsequent years, dominance declined from its historic highs, though Bitcoin has consistently maintained the largest share of any single asset in the space.
When Bitcoin dominance is rising or elevated (above 55–60%), it typically indicates one of two things: either the broader market is in a risk-off phase where capital consolidates into the perceived safety of Bitcoin, or Bitcoin is in an early bull phase where it leads before gains rotate into smaller assets. Historically, the beginning of new bull cycles has seen rising Bitcoin dominance as institutional and retail capital re-enters through Bitcoin first.
When Bitcoin dominance falls below 45%, capital is rotating from Bitcoin into altcoins. This is colloquially known as "altcoin season" and has historically occurred in the later stages of bull markets after Bitcoin has already made significant price gains. During these periods, altcoins can dramatically outperform Bitcoin in percentage terms, though they also carry significantly higher risk.
Falling dominance does not necessarily mean Bitcoin is falling in price — it can simply mean altcoins are rising faster. Dominance is a relative measure of Bitcoin's share, not an absolute measure of its price direction.
Bitcoin dominance has important limitations. The total market cap includes thousands of low-liquidity tokens whose valuations may not reflect genuine economic activity. The rapid growth of stablecoins (USDT, USDC, etc.) has suppressed Bitcoin's dominance figure without indicating genuine altcoin strength. Analysts increasingly look at "adjusted dominance" that excludes stablecoins for a cleaner signal.
Dominance is most useful as a directional context indicator — understanding roughly where we are in the market cycle — rather than as a precise timing tool.
Observing Bitcoin dominance across multiple halving cycles reveals a recurring pattern. In the 12–18 months following a halving, as Bitcoin's new supply issuance is cut in half and price appreciation typically follows, dominance tends to rise as Bitcoin leads the market. In the later stages of the cycle, dominance often peaks and then falls as altcoins capture disproportionate gains. The current cycle position can be tracked on BTCDash alongside live halving countdown and MVRV ratio data.