This is a curved projection channel created upon a bounding box. The chart is presented over a LOG price scale. For its creation we use 3 "curved line boundaries" that cover the center, upper and lower limits for potential movement. Even if this not an attempt to forecast a trend or future scenario, it allows to have an easy to read view of probable limits and oscillation parameters.
Also the arrow and lines point to a probable trajectory for the price.
Just sharing my personal charts for learning purposes only. This is not an investment recommendation.