I tried to find something to back this up but all i could find were post from sites like theguardian.com, wired.co.uk and weird "fact" twitter sites and not one of them could provide any kind of reliable source to prove the story . Besides I doubt Liechtenstein would have needed this since it's one of only five countries without debts. Well maybe all the original posts/sites were taken down and that's why I can't find anything.