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.
Bitcoin is stronger and more popular than other currencies and also has a higher value. Bitcoin has proven to survive to this day at a high price and has the largest user population.