The market for the digital currency was rocked last month when Mt.
Gox, once the world's largest bitcoin exchange, ceased operations,
and soon after filed for bankruptcy. Mt. Gox said it may have lost
750,000 bitcoins, worth hundreds of millions of dollars, in a
The freeze on Karpeles' assets, issued by Judge Gary Feinerman in
Chicago, also applies to Mt. Gox's U.S. affiliate and the Japanese
parent company, Tibanne, according to Christopher Dore, an Edelson
attorney who represents U.S. customers of the bitcoin exchange.
The judge's order did not apply to the Tokyo-based Mt. Gox KK, which
was shielded from litigation after it filed for bankruptcy
protection in Japan and the United States.
Mt. Gox suspended withdrawals on February 7, leaving customers
unable to recover their funds.
In a bankruptcy hearing on Monday, parties suing Mt. Gox said there
are growing concerns that Karpeles moved millions of dollars of
bitcoins in recent days based on information gleaned from the
Dore represents Gregory Greene, an Illinois resident, who brought a
proposed class action over what he claims is a massive fraud. Mt.
Gox blamed the loss of hundreds of millions of dollars in bitcoins
on a flaw in the software algorithm that underlies the digital
"The main thing we hope to achieve is to finally see what the web of
things that Karpeles has put together over the last few years and to
start unwinding it as to where things are and what happened," said
Bitcoin is bought and sold on a peer-to-peer network independent of
central control. Its value soared last year, and the total worth of
bitcoins minted is now about $7 billion.
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Investors were warned on Tuesday that the lure of a quick profit
trading the volatile currency should not blind them to bitcoin's
risk of theft, fraud and significant losses, according to an alert
by the Financial Industry Regulatory Authority.
Dore said the judge's order freezing Karpeles' assets will expire in
14 days, when the parties return to court to decide if it should be
John Murphy, a Baker McKenzie attorney for Mt. Gox KK, the bankrupt
company, declined to comment. Dore said the U.S. affiliate, Karpeles
and Tibanne were not represented at the hearing.
The case is Gregory Greene v Mt. Gox Inc et al, U.S. District Court,
Northern District of Illinois, No. 14-01437
(Reporting by Tom Hals in Wilmington,
Delaware; editing by Andrew Hay)
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