$12256 / $11500
I find the copyright information of the base assets somewhat incomplete.
Specifically, I would like to use student_c.png for my code entry. From the AUTHORS file I would guess that it is copyright by Jonathan Palecek. But it is very obviously based on male_walkcycle.png and male_pants.png by Stephen Challener, and hairmale.png by Manuel Riecke (re-dyeing probably done by Jonathan Palecek).
So how should I attribute that image?
This website's content is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
I'd list all the contributors to the image that you can identify. I'll talk to some people about getting all of the contributors to each image clarified, but it may take some time.