Of course, Bitcoin can be a world currency. However, Bitcoin is not valid in all countries. But seeing the popularity of Bitcoin,it will be the world currency for a time.Only the bitcoin has been known in all the countries, which could not make any other coins.Everywhere they are Bitcoin,world Currency Will be.
Do not agree if the terms of the world currency. because each country has its own regulations in terms of their main currency or financial things that are most likely and I believe can happen. btc be playing digital currency for any digital transactions using BTC ..