(Bloomberg) — Bitcoin resumed its tumble on Thursday after South Korea said it was eyeing options including a potential shutdown of at least some cryptocurrency exchanges to stamp out a frenzy of speculation.
South Korea has been ground zero for a global surge in interest in bitcoin and other cryptocurrencies as their prices surged this year, prompting the nation’s prime minister to worry over the impact on Korean youth. While there’s no immediate indication Asia’s No. 4 economy will move to shutter exchanges that have accounted by some measures for more than fifth of global trading, the news poses a warning as regulators the world over express concerns about private digital currencies.