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EIP-8184 LUCID encrypted mempool

DraftCorecreated 2026-03-04requires EIP-2718, EIP-7805

Public encrypted mempool for commit-before-reveal inclusion of MEV-sensitive transactions, without enshrining a specific encryption scheme.

Authors: Anders Elowsson (@anderselowsson), Justin Florentine (@jflo), Julian Ma (@ma-julian)

Depends on (2)

Proposals this one names in its requires field.

EIP-2718Typed Transaction EnvelopeEIP-7805Fork-choice enforced Inclusion Lists (FOCIL)

What the specification covers

AbstractMotivationSpecificationConstants and parametersOverview: from submission to executionSealed transactionsST ticketCiphertext envelopeBundlesExtended payload bid with ST-commitmentsExecution payload expansionKey messageKey message validity and decryptionKey releaseKey timelinessInclusion lists with STs and bundlesBlock processingRecovery under rejected payloadEngine API ChangesBeacon Chain RPC API ChangesRationaleProbabilistic front-runningMEV and welfareExogenous MEVEndogenous MEVAutogenous MEVCompetition for the ToBUser welfareProtocol welfareKey publisher liability for non-revealPTC influence and state observationAlternative specificationsSame-slot decryptionFrame transaction integrationCensorship resistance without FOCILAdditional bundle and key optionsTrust graphBackwards CompatibilitySecurity ConsiderationsCopyright

This proposal declares no Solidity interface, so there is nothing to compute. It may be a core protocol change, a meta proposal, or written in prose only.

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