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:
Understanding ICOs and other cryptocurrency offerings (North American Securities Administrators Association)

Cryptocurrency exchanges are vulnerable to cyber attacks that might result in your investment being lost forever — scams are always a possibility with cryptocurrency. Scammers frequently use social media platforms such as Instagram, Facebook and Twitter to dupe consumers into making these investments. If you believe you've been targeted, you should contact national reporting centers like Action Fraud in the United Kingdom or the Federal Trade Commission (FTC) in the United States as soon as possible.
Yet some crypto watchers have raised red flags over SafeMoon’s unusual structure. It charges a 10% fee to buy tokens and another 10% to sell -- almost unheard of in the digital currency world. Half of these fees are paid to owners as an incentive to keep holding and the other half goes into a liquidity pool controlled by the developers. SafeMoon calls itself a DeFi token, or one that uses decentralized finance to govern functions through software, but it has a chief executive officer and chief operating officer. Critics also worry about the discretionary nature of the “manual” coin burns used to adjust its circulation.