"Pennying" as a strategy to win more auctions, and how to deal with it

[tomatosoup]

In discussions with Felix and Haris, I realized that there’s sort of “two ways” to penny. Assuming the solver provides their own interactions, they can either accurately report the token inputs and outputs of the interaction or not. If they accurately report, it’s very easy to detect the pennying because the token amounts provided do not sum to zero. If they do not, it’s harder to detect but there is already a rule against misreporting these in CIP-11: CIP-11: Rules of the Solver Competition - status quo and an update proposal (rule 4 under update 1). Apparently most pennying is in the former case right now. So yeah just wanted to put that out there for everyone.