Ha, I don't know where he got the shirt, but Ashkan and I were classmates at Berkeley. We teamed up with our friend Travis for our final project (http://knowprivacy.org). I submitted the metadata t-shirt idea for the I-School t-shirt back in 2009 (https://www.flickr.com/groups/1063046@N23/) but it lost. As you can see, my photoshop skills were pretty poor. But Travis is a great designer (http://travispinnick.com/) and he helped me create the basic black and white one, which I submitted for the code4lib tshirt in 2011 (where it lost a second time) and again in 2013 where it finally won. So that doesn't exactly answer your question, but may give you some context.
Library Systems Programmer
University of Southern California
From: Code for Libraries <[log in to unmask]> on behalf of Rosalyn Metz <[log in to unmask]>
Sent: Thursday, June 12, 2014 7:45 PM
To: [log in to unmask]
Subject: Re: [CODE4LIB] Who gave Ashkan Soltani a t-shirt?
you can actually get it online from a bunch of different places.
On Thu, Jun 12, 2014 at 7:27 PM, Justin Coyne <[log in to unmask]>
> Has anyone else noticed that Ashkan Soltani (http://ashkansoltani.org/)
> appears to have the t-shirt from the 2013 conference and he really likes to
> wear it. Was he at the conference?
> He's wearing it in a video here:
> and here at 43m31s