Bitcoin (abbreviated as BTC) is an electronic payment system in which
virtual "money" (bitcoins)
circulates. Do you have VISA or Mastercard plastic cards? Both Visa and
Mastercard are also
electronic payment systems. However, they use the currency we are accustomed
to such as dollars and
euros, and all transactions are processed by banks. These currencies are
called fiat currencies. The
Bitcoin system uses cryptocurrency, a purely digital currency that is not
tied to any global bank or
economy of any country. It has its own value (rate), which is determined by
demand.