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cs.GT2026
When One Leak Pays Forever: Context Binding and the Price of Deterring Collusion
Tingyi Lin, Shawn Yu, Ruoran Lai +1
A coalition that deviates once can profit many times when what it sells keeps working. In a threshold-encrypted mempool, a leading defense against maximal extractable value (MEV),…
cs.GT2026
The Exact Welfare Guarantee of Fixed-Price Bilateral Trade
Tingyi Lin, Yichen Shi, Ke Dong +3
A seller and a buyer with independent private values can trade only at a posted price. We determine the worst case of this mechanism exactly: the best posted price always guarantee…