text: Statista, a well-known German market research company, recently released statistics showing that Vietnam ranks second in the world in the popularity of virtual currencies?
classes:  No, in 2012, the European Central Bank (ECB) defined a virtual currency as "a digital currency, unregulated, issued and generally controlled by its developers, which is simultaneously used and accepted among members of a particular virtual community".  Besides, in 2012, the European Central Bank (ECB) defined a virtual currency as "a digital currency, unregulated, issued and generally controlled by its developers, which is simultaneously used and accepted among members of a particular virtual community".  Yes, in 2012, the European Central Bank (ECB) defined a virtual currency as "a digital currency, unregulated, issued and generally controlled by its developers, which is simultaneously used and accepted among members of a particular virtual community".  Meanwhile, in 2012, the European Central Bank (ECB) defined a virtual currency as "a digital currency, unregulated, issued and generally controlled by its developers, which is simultaneously used and accepted among members of a particular virtual community".