The Megaupload founder is "an extremely wealthy man," but the U.S. government has not shown since Dotcom's arrest that he has access to any money, Dawson wrote.

The judge considered a sworn statement from Bonnie Lam, Megaupload's chief financial officer in Hong Kong, who said she took care of Dotcom's personal finances, saying he was "not a well-organized person," according to Dawson's ruling.

Law enforcement officials found that Dotcom held 59 credit or bank cards in 13 different names, of which only 21 were still valid. Dotcom's former surname was "Schmitz," but he had also gone by the names "Kim Vestor" and "Kim Tim Jim Vestor."

Since Dotcom's arrest, four bank accounts set up for the benefit of his wife's family in the Philippines were revealed by the U.S., but those accounts appear to be empty, the judge wrote.

If Dotcom were to flee to Finland or Germany, he could be prosecuted in either of those countries, Dawson wrote. "Absconding to either of those countries would not result in an immunity from prosecution," Dawson wrote.