user \ relay win ≈zero lose
win encourages win-win collaboration of both parties strictly forbidden strictly forbidden
≈zero @user creates garbage orders @relay deliver false data, at the cost of relay’s own reputation—with evidence
lose strictly forbidden @user not confirm receipt @relay giving @user a false key or no key, at the cost of relay’s own reputation—with evidence

With an additional dispute module, users can use evidence to dispute a malicious relay and take the relay’s staking.