Megaupload founder Kim Dotcom is back in court as the United States appeals against releasing millions of emails in its case against him. The founder of the file-sharing website watched on Thursday from the public benches of New Zealand’s appeals court. US authorities accuse Dotcom of racketeering and money laundering by facilitating massive copyright piracy on his website. They are seeking his extradition. Dotcom’s legal team won an earlier ruling in which a lower court concluded the US needed to release a wide range of its evidence. Appealing the ruling, the US argued it should be compelled to disclose only limited evidence because the extradition hearing doesn’t amount to a full trial. The US says its evidence includes millions of emails. The court will likely rule in the coming weeks.