Tokyo-based bitcoin exchange Mt.Gox claims to have nearly a quarter of the 850,000 bitcoins it said it lost in February, according to Kyodo News International.
The company said that about 200,000 bitcoins were left in a used "wallet," the news service said. A bitcoin wallet is virtual tool that allows users to do transactions with other users.
When Mt.Gox filed for bankruptcy protection on Feb. 28 it had outstanding debts of about 6.5 billion Japanese yen ($63.5 million), 850,000 lost bitcoins and 127,000 empty-handed customers.
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Mt.Gox moved the 200,000 bitcoins to an offline wallet, Kyodo News said.