Bitcoin is a good indicator of the crypto market in general, because it’s the largest cryptocurrency by market cap and the rest of the market tends to follow its trends.
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Wavelets are wavelike functions used to transform signals into a representation which has time and frequency domain components. Visually wavelets appear as wave-like oscillations with an amplitude that starts at zero, increases, then returns to zero. Another way to consider a wavelet is as a bandpass filter, which can be applied to a time series under investigation, letting through only components of the time series within a finite range of frequencies to different extents depending on the energy spectrum of the wavelet. Wavelets take the form:
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.