FRANKFURT (Reuters) - Any attempt to regulate cryptocurrencies such as bitcoin to usd calculator, visit the following post - http://oxgalley5.jigsy.com/entries/general/Ultra-HD-Discussion-board-Releases-New-UHD-Guidelines , have to be on a global scale as national or regional guidelines can be exhausting to implement on a virtual, borderless neighborhood, a director at Germany's central bank mentioned on Monday.