Use BTCUSD for better reading.
removed 0.91, 0.15
added -0.236 for better fit the dips
Adjusted the Lower slope and intercept to center the 'stock to flow' model, instead of the the price itself.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.