off course the bitcoin is already become a international currency now because it is using by so many people of varrious countries .the performance of bit coin is also accepted by users so it become verry popular site now a days.
bitcoin is used by various people around the world from different countries and it proves that bitcoin worth anywhere and I think now we can say that bitcoin is an international currency
Bitcoin is the only currency that has got access everywhere nature, that means it's the one that can be converted to the local fiat without much difficulty. The same is not even possible with dollar. So without any question we can say bitcoin is an universal currency than a international currency.