That's already how it works! Look for "points" in the FAQ.

https://www.sheepit-renderfarm.com/faq

Wouldn't that incentive people to just return all black images and render nothing to get free points?

Then make it a feature so that the person receiving the renders can accept/reject them. If they are rejected, then the renderer is not credited. If the person receiving racks up too many rejects, then they cannot submit new renders. The reject process would be hairy in that you'd need to explain why. It has potential for getting nasty, but any 2-party system can.

Then I'll be a dick and modify the client to take the frames anyway and still send a reject. It's going to be abused.

Oh. You're why we can't have nice things.

Seriously though, any platform is going to have its share of liars, cheaters, grifters, con artists, and outright scams. What the world relies on is that enough people aren't. The trick is attracting enough honest people while driving away enough of the dishonest people. it's a constant game of cat and mouse.

Yeah exactly. Seems like they're doing okay moderating it though.

The website exists since 2013, and it seems like they managed just fine.

Have the reject frames re-rendered by someone else to find out the truth. Ban abusers.

Better yet, make all abusers render each other frames.

That’s exactly what they have but for me it took way too long rendering for others and I never got a chance to render my own stuff