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EIP-8222 Lean Staking

DraftCorecreated 2026-04-09requires EIP-6110, EIP-7251

L1 native, two-phase staking with validator unlinkability

Authors: Mohammad Jahanara (@mmjahanara), Pierre Daix-Moreux (@dmpierre)

Functions this standard introduces (1)

0xba188631add_pending_deposit(bytes32)payable

Depends on (2)

Proposals this one names in its requires field.

EIP-6110Supply validator deposits on chainEIP-7251Increase the MAX_EFFECTIVE_BALANCE

What the specification covers

AbstractMotivationSpecificationPending Deposit TreePending DepositzkSNARKClaimTwo-phase WithdrawalsWithdrawal Commitment Credential (type 0x03)Direct Pending Deposit to Pending WithdrawalRationaleRoot ExpiryNullifier Set GrowthFixed DenominationsPlausibly Deniable TransfersPlausible Deniability with Deposit-side OnlyTwo-sided Plausible DeniabilityReference ImplementationBenchmarksSecurity ConsiderationsCompatibility with EIP-7002Compatibility with Non-Custodial StakingDeposit Privacy vs Network AnonimityProof Soundness and Post-quantum SecurityLinking via Transaction TimingClaim Front-runningCopyright

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