LONDON: Bitcoin tumbled 18 percent on Tuesday to a four-week trough close to $11,000, after reports that a ban on trading of cryptocurrencies in South Korea was still an option drove fears grew of a wider regulatory crackdown. Bitcoin’s slide triggered a massive selloff across the broader cryptocurrency market, with biggest rival Ethereum down 23 percent on the day, according to trade website Coinmarketcap, and the next-biggest, Ripple, plunging 33 percent. South Korean news website Yonhap reported that Finance Minister Kim Dong-yeon had told a local radio station that the government would be coming up with a set of measures to clamp down on the “irrational” cryptocurrency investment craze. South Korea had said on Monday that its plans to ban virtual coin exchanges had not yet been finalized, as government agencies were still in talks to decide how to regulate the market. Bitcoin slid on the latest news, trading as low as $11,191.59 on the Luxembourg-based Bitstamp exchange, down 18 percent on the day, for a short period putting the digital currency on track for its biggest one-day fall in three years. “It’s mainly been regulatory issues which are haunting the cryptocurrency, with news around South Korea’s further crackdown on trading the driver today,” said Think Markets chief strategist Naeem Aslam, who holds what he described as “substantial” amounts of bitcoin, Ethereum and Ripple. Published in Daily Times, January 17th 2018.