The launch of NYCCoin follows MiamiCoin, which to date has earned more than $21.3 million since its August 2020 launch, the nonprofit said.
For many people, crypto is a type of alternative investment. Just as you can buy and trade stock in public companies, you can buy cryptocurrency with the hope that it will increase in value over time, allowing you to cash out for a profit at a later date. Some people invest in crypto less for the belief that it will become a popular currency and more as a bet on the blockchain technology behind it.

Savvy cryptocurrency users are therefore maniacally protective of their private keys, typically storing them in multiple digital locations — although generally not Internet-connected, for security purposes — and on paper or in other physical form.
Interpretation of visual scalograms is subjective so it is desirable to find a more quantifiable way to validate the strengthening of coherence in bubble regimes. Fig 6 shows the wavelet coherence over time for the different period bands, in the case of the “new authors” factor for Ethereum. Coherence values, plotted on the vertical axis, vary between zero and one. Time is plotted on the horizontal axis. The areas of the price time series that are recorded as bubble-like regimes using the GSADF test are shaded red.