Bitcoin and other crypto currencies rebounded on Tuesday though in a report that the Bank of Japan made a slightly negative "question and answer" page about digital coins.
Bitcoin was trading at $ 7.062.6 at 09.20 GMT on the Bitfinex exchange, jumping 1.7% over the previous 24 hours.
Ethereum, the world's second largest cryptocurrency by market capitalization, rose 0.5% to $ 381.65 on the Bitfinex exchange.
XRP / USD coins jumped 2.6% to $ 0.49338 on the Poloniex exchange.
Meanwhile, Litecoin traded 2.1% higher at $ 118.61.
Reports that the Bank of Japan came up with a rather negative Q & A page about cryptocurrency added to the spotlight, as the central bank raised awareness about the risk of crypto money.
The page, titled "Let's think about cryptocurrency!", The questions listed include whether the digital coins can be considered real money, or whether investors can profit from them. The page then notes that no central bank supports crypto, and asks "Should not we forbid something we do not really understand?"
The page was prepared after state finance ministers and central bank governors of the Group of 20 nations last month warned that crypto could disrupt financial markets.
Alibaba said in a complaint that the use of "trademarks", repeated, and deliberately misleading "of the trademark aimed at confusing consumers who thought their products were affiliated with Alibaba.