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The levels describe how far the current price sits above or below the fitted long-term trend in volatility-adjusted log space. Lower bands indicate prices sitting well below trend, while higher bands indicate prices stretched above trend.
These labels are descriptive model zones, not buy or sell signals. The rainbow width control changes how wide the zones are, so the same asset can move between levels as the width is adjusted.
Each coin uses daily USD prices from its first locally cached
observation. The chart maps time and price through natural logs,
then fits a power-law trend:
ln(price) = a + b * ln(days_since_inception). In
regular price space that becomes price = e^a * days^b.
The rainbow bands are parallel curves around that fitted trend.
After fitting, cryptorainbowcharts.com computes each day's log
residual
ln(actual_price) - ln(model_price), measures its
standard deviation sigma, and draws bands at
model_price * e^(k * sigma * band_width) for several
k values below and above the trend.
A coin is highlighted as positive since inception when the fitted
exponent b is above zero and the fitted value at the
latest cached day is above the fitted value near inception. That is
a trend classification, not investment advice.