At each point information from neighbouring data is used. As the time series considered are finite, the areas at the start and end of the data (especially at higher period bands) will not have all the data required. One solution to make computation possible, chosen here, is to pad the time series with zeros where required. However, the zero padding will impact the reliability of the results. It is standard to use a cone of influence to represent this difference in reliability of results. Pale colours represent those areas outside the cone of influence with less reliable results (as seen on Fig 3). Higher period bands require more data for computation resulting in the cone shape.
But first, a word of warning: buying cryptocurrencies and decentralised finance tokens as well as stocks and shares is a risky business.

However, you’ll likely misplace your virtual wallet or lose your coins. There have also been thefts from the websites that exist to store cryptocurrency on the internet. Because the value of cryptocurrencies like Bitcoin can fluctuate dramatically, some people are hesitant to convert “real” money into Bitcoin.
As its name suggests, you can use cryptocurrency to make purchases. But your purchasing power is limited; crypto isn’t yet widely accepted among retailers and other businesses.