1/ Dispute solvers will ask for evidence. All evidence can potentially be faked. But the cost of faking evidence (specially if a video or videoconference) is so high that it makes the whole thing unviable. I call it "Evidence as proof of work".

2/ In RoboSats (very small quantities and relevant skin-in-the-game in forms of bonds), this approach is very robust and easy to implement. In Bisq and other platforms with larger amounts... might still be worth the work to fake evidence...

3/ At the core, the best dispute resolution system is the one that disincentives cheating effectively. If you know some math and the term 'opportunity cost', you won't even try to cheat in RoboSats.