Meanwhile, there has been plenty of speculation that bitcoin’s big rise may have been due to a pump-and-dump scheme. One theory that the U.S. Justice Department is reportedly looking into is that the digital coin Tether (which is supposedly pegged to the U.S. dollar to make for a less volatile cryptocurrency) was used to manipulate the bitcoin market and cause a large run-up in price. This theory stems from an academic paper, which cast Tether in a very damning light. And it also led many to believe that the initial bitcoin craze was manufactured and destined to bust.
Technically, it broke out of its descending triangle consolidation zone in the first week of November, followed by two important resistances at $62,500 and also at $63,500. This makes it bullish for the short term as well & these resistances will now act as support, above which one may enter long positions in BTC.

Fiat currency. A fiat currency — such as dollars, euros, pounds, or yen—is a trusted medium of exchange, or legal tender, that is issued by a recognized government or authority. U.S. dollars, for example, are backed by the “full faith and credit” of the United States government.
Cryptocurrency is formed through a process known as mining, which entails employing computer processing power to solve complex mathematical problems to earn coins. Users can also purchase the currencies from brokers, which they can then store and spend using encrypted wallets.