Bitcoin falls as one of the world's biggest cryptocurrency markets readies a bill to ban trading

South Korea's justice minister said that the country is preparing a bill that will ban all cryptocurrency trading
Park Sang-ki told reporters that there are "great concerns" regarding virtual currencies
Bitcoin tumbled more than 12 percent following Park's remarks
South Korea's justice minister said on Thursday that a bill is being prepared to ban all cryptocurrency trading in the country.
That news is a major development for the cryptocurrency space, as South Korea is one of the biggest markets for major coins like bitcoin and ethereum.
According to industry website CryptoCompare, more than 10 percent of ethereum is traded against the South Korean won — the second largest concentration in terms of fiat currencies behind the dollar. Meanwhile, 5 percent of all bitcoin are traded against the won.
"There are great concerns regarding virtual currencies and justice ministry is basically preparing a bill to ban cryptocurrency trading through exchanges," Park Sang-ki said at a press conference, according to the ministry's press office.
Bitcoin tumbled more than 12 percent following Park's remarks, according to CoinDesk's bitcoin price index that tracks prices from four exchanges. At 1:26 p.m. HK/SIN, the cryptocurrency price retraced some of its losses to trade at $13,547.7.
Park added that he couldn't disclose more specific details about proposed shutdown of cryptocurrency trading exchanges in the country, adding that various government agencies would work together to implement several measures.
Reuters further reported that a press official said the proposed ban on cryptocurrency trading was announced after "enough discussion" with other government agencies including the nation's finance ministry and financial regulators.
Cryptocurrency trading in South Korea is very speculative and similar to gambling. Major cryptocurrencies like bitcoin and ethereum are priced significantly higher in the country's exchanges than elsewhere in the world. For example, bitcoin traded at $17,169.65 per token at local exchange Bithumb, which was a 31 percent premium to the CoinDesk average price.
That difference in price is called a "kimchi premium" by many traders