Bitcoin already known and used worldwide. Sure the number of people who use bitcoin is still not as big as we wanted to but it is not small neither. I wish that Gox thing never happened. Because of that scam people got scared a lot and they see bitcoin as scam sadly.
But still most of the countries worldwide dont recognized bitcoin yet because of its characteristic that it is volatile system, in which governments cannot assure 100% that they can be profitable here as well as aiming for their economy to grow in a short period of time. The thing is , it is possible that soon bitcoin be aligned for the international currency.