Napster lost the case in the District Court but then appealed to the U.S. Court of Appeals for the Ninth Circuit. Although it was clear that Napster could have commercially significant non-infringing uses, the Ninth Circuit upheld the District Court's decision. Immediately after, the District Court commanded Napster to keep track of the activities of its network and to restrict access to infringing material when informed of that material's location. Napster wasn't able to comply and thus had to close down its service in July 2001. In 2002, Napster announced that it was bankrupt and sold its assets to a third party. In a 2018 "Rolling Stone" article, Kirk Hammett of Metallica upheld the band's opinion that suing Napster was the "right" thing to do.