Bitcoin legal by some country like, japan, croatia, France, luxemburg, England, Argentina, Finlandia, Sweden, Switzerland,and United States. There is mine catagories bitcoin a comvertible decentralized virtual currency. And there also legalized only as a pyment system such as bulgaria. The conclusion, is bitcoin legal? Yes, in some country have fully regulated it, or permitted it with certain restritions.
I'd rather say that Bitcoin is legal everywhere unless a country specifies that it is illegal on its territory. Since Bitcoin is a digital, decentralized currency, no government controls it, so no government can declare it illegal everywhere. Any government declarations and laws related to Bitcoin will apply only in the territory of each government.