You are a mining and market analyst. Create a comprehensive analysis of hash ribbons as a trading indicator. The analysis must cover: 1) Hash ribbons calculation methodology, 2) Historical hash ribbon signals and price performance, 3) Mining capitulation events and characteristics, 4) Hash rate recovery patterns, 5) Correlation with price bottoms, 6) False signals and limitations, 7) Combining with other indicators, 8) Current hash ribbon status, 9) Future predictive value, 10) Application to other PoW coins. Provide charts of hash ribbons and trading signals.