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Bitcoin dominance and crypto market share markets

Bitcoin dominance is a popular metric in crypto commentary, often used as shorthand for whether money is flowing into or out of alternative coins. Event contracts can ask whether dominance will be above a threshold on a date. Because dominance is a ratio built from data providers' choices, reading the rules is especially important. This SoftCta guide explains how it works.

The calculation

Dominance equals bitcoin's market capitalisation divided by the total market capitalisation of all tracked crypto assets. Bitcoin's own market cap is fairly standard: circulating supply times price. The denominator is not. Each provider decides which tokens to include, how to treat stablecoins, wrapped or bridged tokens and assets with thin trading, and which exchange prices to use. That means CoinGecko, CoinMarketCap and the TradingView BTC.D index can disagree by a few percentage points at the same moment. A contract must name its source.

The denominator problem

Because dominance is a ratio, it can move for reasons unrelated to bitcoin. If stablecoin supply grows by tens of billions of dollars, total market cap rises and dominance falls. If a new token is listed with a large nominal market cap, the same happens. If a provider removes or reclassifies assets, dominance can jump overnight. Our guide on stablecoin supply milestones explains one of the biggest drivers. Some analysts look at dominance excluding stablecoins, which is a different number again.

Dominance and price are different questions

Dominance can rise in a falling market, when alternative coins drop faster than bitcoin, and can fall in a rising one, when other coins rally harder. A reader who thinks bitcoin will rise has not necessarily formed a view on dominance. Our guide on bitcoin price brackets covers the price question separately.

Snapshot and touch rules

Dominance figures update constantly. A contract may settle on a daily close, a specific time snapshot or whether dominance touches a level at any point. These produce different probabilities; see our guide on touch versus close. Crypto trades around the clock, so the time zone of the snapshot matters, as our time zone guide explains.

Historical ranges

Bitcoin dominance has varied widely over the years. It was above 80% in the early years before many alternative coins grew, fell sharply during the 2017–18 and 2021 alternative-coin booms, and rose again during later periods as bitcoin ETFs drew institutional demand. Those swings show that dominance is not anchored to a fixed level, and that methodology changes can affect long-run charts. Compare with related ranking contracts in our guide on market cap rankings.

A reading habit

• Identify the exact data source and whether stablecoins are included.
• Check whether the contract settles on a close, a snapshot or a touch.
• Separate your view on bitcoin's price from your view on its relative share.
• Watch stablecoin supply and large new listings as drivers of the denominator.

Convert prices with the implied probability tool and verify live prices on the venue before reacting to a quote.

Primary sources SoftCta readers open

• CoinGecko and CoinMarketCap global market data
• TradingView BTC.D index methodology
• Stablecoin issuer supply disclosures
• Contract rulebooks naming the data source and snapshot time

Reading the quote step by step

• Read the full title and rules, including the named settlement source and the time zone.
• Convert the Yes and No prices to implied probabilities and note the gap between them.
• Subtract fees and spread to see the effective price you would actually face.
• Write your own probability range and the evidence behind it, then compare.
• Check related and near-duplicate markets on other venues for consistency.

Closing SoftCta checklist

• Re-read the venue definition in your own words before reacting to a price.
• Convert prices with fee and spread awareness; verify live cents on the operator.
• Prefer primary settlement sources over secondary headlines and social summaries.
• Treat ChanceWire hubs, movers, and tools as orientation — not order entry.
• Confirm age, location, and product eligibility; SoftCta pages will not suggest location spoofing.
• If clarity is incomplete, watching is a complete SoftCta outcome — no pick-selling urgency required.

SoftCta habits

• Write your own probability range before checking the crowd price.
• Prefer dated primary sources over social summaries.
• Compare related markets when a single book looks extreme.
• Size curiosity with fees and depth in mind; substantial risk of loss.