"The ban on Bitcoin transactions for financial institutions may make some investors think that the virtual currency will not have the liquidity they expected, and they may withdraw from the market," said Chen Xiao, a Shanghai-based holder of the currency. "But on the other hand, regulators haven't banned the use and trading of the coin on Internet platforms, so that means that the currency was not labeled as illegal."

The Bitcoin was being traded at 5,920.87 yuan ($970) per coin on BTC China, the largest Bitcoin exchange in the country, at 6 pm on Thursday. On Sunday, the price on BTC China hit 7,395 yuan, an all-time high.

BTC China's CEO Bobby Lee was quoted by Bloomberg News on Thursday as saying that the regulators' move will protect the interests of consumers.

Lee added that BTC China is seeking recognition from the authorities for the currency so that it can be used to pay for goods and services instead of being used solely for speculation, the Bloomberg report said.

"Bitcoin trading can be considered a high-risk activity. Bitcoin prices are volatile, and can swing wildly, from day to day. Please use extreme caution when making the decision to invest in, or to sell, Bitcoin. BTC China is not asking users to buy or sell Bitcoin as an investment or for profit. All Bitcoin trading decisions should be made independently by the user," says the risk disclaimer on BTC China's website.

Fraudulent trading platforms have been raising concerns among Bitcoin investors in China.

"Trading Bitcoin on online platforms may not be as transparent as wiring money online — you don't see the money arriving in your bank account soon after the transaction; sometimes, it may take days to see where your money went," said Qian Zheng, a former Bitcoin trader.

"I won't trade Bitcoin again until there's a platform that gets legal recognition from regulators," Qian added.

Chinese police have detained three people who allegedly operated a fraudulent online Bitcoin trading platform, shut it down unexpectedly and then vanished with the investors' assets, the Xinhua News Agency reported yesterday.

Police said the trading volume of the platform, which claimed to be based in Hong Kong, grew gradually and it eventually ranked fourth in the country.

By the end of September, the platform had attracted 4,493 registered users who traded Bitcoin as if they were buying and selling stocks or futures, the police said.

The platform closed suddenly on Oct 26 and its management team could not be contacted after that, Dongyang police in Zhejiang province said.

An investor surnamed Qiao lost 90,000 yuan and reported the case to the Dongyang police department, which immediately started an investigation.

According to a report in Hong Kong-based newspaper The Standard, investors might have lost up to 25 million yuan.

Contact the writers at wuyiyao@chinadaily.com.cn and gaochangxin@chinadaily.com.cn