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EIP-8164 Native Key Delegation for EOAs

DraftCorecreated 2026-02-17requires EIP-2, EIP-2718, EIP-2929, EIP-3541, EIP-3607, EIP-4844, EIP-7702

Allows EOAs to permanently replace ECDSA with alternative signature schemes via an extended delegation designator.

Authors: Gregory Markou (@GregTheGreek), James Prestwich (@prestwich)

Depends on (7)

Proposals this one names in its requires field.

EIP-2Homestead Hard-fork ChangesEIP-2718Typed Transaction EnvelopeEIP-2929Gas cost increases for state access opcodesEIP-3541Reject new contract code starting with the 0xEF byteEIP-3607Reject transactions from senders with deployed codeEIP-4844Shard Blob TransactionsEIP-7702Set Code for EOAs

What the specification covers

AbstractMotivationSpecificationConstantsDelegation Designator SpaceNative Key Transaction (Type 0x06)Native Key Authorization TupleECDSA-Signed Authorization (Key Migration)Native Key Authorization (Key Rotation)Transaction ValidationAuthorization List ProcessingECDSA Rejection RuleKeyless Account Creation (Crafted-Signature Method)Transaction OriginationKey RotationInteraction with EIP-7702Code-Reading OperationsCode-Execution OperationsRationalePermanent DelegationEmbedded Keys vs. Contract DelegationNative-Key Accounts as Pure EOAsPost-Quantum ReadinessChoice of ML-DSA-44Scheme-Specific PrefixesSingle Transaction Type with Dual Authentication ModeCrafted-Signature CreationOmitted FeaturesBackwards CompatibilityTest CasesSecurity ConsiderationsPost-Quantum Threat ModelECDSA Key Exposure Window (Ephemeral Key Path)ML-DSA-44 Implementation CorrectnessFront-RunningReplay ProtectionAccount RecoveryCross-Chain Authorization ReplayTransaction Pool ConsiderationsDeterministic Keyless AddressesCopyright

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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