Bitcoin is a digital currency that was created by Satoshi Nakamoto in 2009.It is created electronically and impossible to control it.This currency are not printed currency like dollars or euros.Running computer all around the world are producing it.Owing to this reason they are different from other currencies.
maybe we have misunderstood the function of bitcoin at the moment, Bitcoin is not a currency can be said to be a static asset of its value, if the normal currency value will be stable. I think it's bitcoin that is invested by the normal money that Bitcoin will later become a static digital money to exchange at the appropriate value