Sounds like you kids need an anonymous decentralized cryptocurrency powering your tor nodes with rewards for doing so. But everyone here hates crypto so I’ll just be over here sipping my Monero tea.
That did work remarkably well, but unfortunately the author lost interest at some point and took the whole project down.
The first reservation that comes to mind for me is concerns about crypto ledgers being more pseudonymous than anonymous. If I start using a cryptocurrency to tip exit node operators, that creates an immutable, publicly visible paper trail linking my presence on TOR back to me. Not exactly the kind of thing I'd be eager to sign up for if I'm trying to hide my tracks.
It also moves things toward a situation where digital privacy is reserved for people who can afford to pay for it, which strikes me as running directly counter to the principles the TOR project is supposed to be upholding.
Either way, it can't be protected in the way filecoin/gridcoin are protected.
Of course a way to prove you are not malicious would be great but I don't see how you can prove that using technology.