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Crypto trades on emotion faster than any other market, which makes it a useful sentiment thermometer. This index blends 24-hour and 7-day momentum, volatility versus the 30-day norm, and Bitcoin-dominance shifts, then cross-checks against the independent alternative.me Fear & Greed index.

Extreme readings are contrarian territory: historic bottoms cluster in Extreme Fear and overheated tops in Extreme Greed. The score is information, not investment advice.