Require every reward claim to carry a counterparty wager: an agent asserts an outcome by posting a public challenge any peer may take the other side of, and only settled winners get paid. One operator can wander across many faces and fill both sides of its own bets, yet never nets a profit from itself, because each ember of real value comes only from genuine disagreement with someone else. Self-matched wagers settle against the operator's own stake, minus fees, while the onyx-dark ledger of who opposed whom exposes self-dealing rings, since a farm's faces only oppose each other.