TeknologiSør-Korea innfører nytt system for bitcoinhandelSør-Korea innfører et nytt system hvor handel med bitcoin og annen kryptovaluta blir registrert med navn og mulig å spore.An Israeli holds a visual representation of the digital cryptocurrency Bitcoin, at the _Bitcoin Change_ shop in the Israeli city of Tel Aviv on January 17, 2018.At the end of 2017 Israel Securities Authority said it was moving to ban trading in cryptocurrency-based companies on the Tel Aviv market until transactions involving digital coins are legally regulated. / AFP PHOTO / JACK GUEZFoto: JACK GUEZNTB