Japanese Finance Minister Taro Aso said on Tuesday that bitcoin has not been proven to be a credible currency and that he would watch its developments in the near-term.
He made the remark to reporters when asked about his French counterpart’s comment this week that France would propose a discussion on regulating the virtual currency at a meeting of G20 group of major economies next year.
“There’s no fixed definition on whether it’s a currency or not. This issue is a difficult one,” Aso said after a cabinet meeting
“It has not yet been proven to 
be credible enough to become a currency, so I need to watch for a little while more.”