Wendy: Adding Order Policies to the Consensus Level
summary
Wendy implements consensus-layer ordering policies as a modular add-on on top of a BFT chain (Tendermint) to minimize MEV by enforcing block-order fairness with a fallback to a weaker timed fairness when loops or large dependency sets appear. It runs a one-round dissemination, computes blocking sets, and integrates commit-and-reveal so reveals can happen earlier; a simulator and a prototype integration exist. Performance shows the protocol runs in parallel to the chain and causes about 10% delayed transactions on fast Tendermint setups, negligible impact on slower chains; requirements include a known validator set, mempool/order hooks, and a mechanism to reconcile policy order with native gas pricing.
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chapters (9)
- 0:00Start
- 4:35Fairness definitions & impossibilities
- 5:53Setup & Model (Highlights)
- 6:47The Framework Protocol
- 8:38Blocking & Revealing rules (local)
- 9:57Policy Examples: Fair Block Order
- 10:28Policy Requirements and Caveats
- 11:52Policy Examples: Capitalistic plus social security
- 12:27Performance Measurements & Integration
