  The purpose of this paper is to review the concept of cryptocurrencies in our
economy. First, Bitcoin and alternative cryptocurrencies' histories are
analyzed. We then study the implementation of Bitcoin in the airline and real
estate industries. Our study finds that many Bitcoin companies partner with
airlines in order to decrease processing times, to provide ease of access for
spending in international airports, and to reduce fees on foreign exchanges for
fuel expenses, maintenance, and flight operations. Bitcoin transactions have
occurred in the real estate industry, but many businesses are concerned with
Bitcoin's potential interference with the U.S. government and its high
volatility. As Bitcoin's price has been growing rapidly, we assessed Bitcoin's
real value; Bitcoin derives value from its scarcity, utility, and public trust.
In the conclusion, we discuss Bitcoin's future and conclude that Bitcoin may
change from a short-term profit investment to a more steady industry as we
identify Bitcoin with the "greater fool theory", and as the number of available
Bitcoins to be mined dwindles and technology becomes more expensive.
