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This is the chart of Tether (USDT) https://coinmarketcap.com/currencies/tether/ of the last 24 hours.
Do you notice something strange?
Look at the Market Cap line, the blue one.
Market Cap has passed from 1616306108 to 2247634461 instantly.
The question is, are they real money or not?
I think the answer will arrive in the next days.