EZTV has at least two and these are the comments from the site regarding authenticity:
$1:
I applaud the swift and early release, but after scanning these files the quality of these rips seems to be subpar and there is
indeed a bothersome watermark on screen for the complete running time. I think its definately worth the wait to hold out for
the 720/1080p.
$1:
Since it seems to be just the first 4 eps that were leaked in hdtv format, i kinda think its a marketing trick to generate buzz
around the show. Still i think i'll hold out for the 1080p releases for this one. A one week wait is bad enough, i dont think i
can handle a 4 week wait