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This is really cool - good luck with this one, if you're associated with it.

This seems exactly the kind of applications Ethereum was meant for; however, is there a dispute resolution organ?

I'm not working on it, but it's a very cool project.

I'm not sure of the details, but this blog post may answer your question about dispute resolution (& malicious actors)

Coding on Ethereum is hard, and this project is ambitious.