Delta Price

Ahr999 Index represents the price-performance ratio of the current price of BTC relative to the historical price or the current price estimated by the mathematical model. The historical price refers to the fixed investment cost price in the past 200 days, and the current price estimated by the mathematical model is the current price estimated by the simulation based on the historical price trend

•When the index ∈ (0, 0.45), historically it is a bottom interval

Since the indicator was originally proposed by ahr999, the name of the Ahr999 index is derived from this. For more information about the author see  this post .