BTC/USD - i think we are close to the bottom

I'm trying to learn this indicator, 'hash ribbons backtest - bitcoin Beats YT Ribbons' but look at this indicator at the bottom and when it has turned green and what the price did after. This is 4 hour candles for BTCUSD on Coinbase (it is similar on other exchanges BTW). Very interesting and some thing I am trying to learn more on how it works.

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This chart is from late Feburary of 2020 to now, forgot to mention the time frame in case people do not see it on the chart.