The movie was entered into public record (https://twitter.com/Cryptomeorg/status/566616227582582785 & http://cryptome.org/2015/02/edwards-019-027.pdf):
Mirrors: http://ergot.yfkm.eu/Citizenfour-HD.mp4 & http://ergot.yfkm.eu/Citizenfour.mp4
Mirrors: http://ergot.yfkm.eu/Citizenfour-HD.mp4 & http://ergot.yfkm.eu/Citizenfour.mp4
Maybe next time you should do a "Show HN" and put the URL in the post text instead of as the title link.