I could set up a clone of the script that accepts uploads from an image board, and whenever the image board connects back, I return those images. However, if any other IP address connects, I return goatse, or a browser crasher.
I guess this is a pretty hard problem to solve. You might have to trust the seeds in the end, which I am not sure is a good idea on something like this, where script kiddies abound. You might need some sort of approval system for seeds...
(Also, don't put space or tabs at the start of comment lines, it makes the script put in <pre> tags that mess up your text.)