ERC-4626 virtual-share offset (OZ ≥4.9)
ether.fi's assessment for RD-F-074 — scored not_applicable on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
ether.fi eETH/weETH are not ERC-4626 vaults. eETH is a custom rebasing ERC-20; weETH is a custom non-rebasing wrapper with a manual share-price accounting system. Neither implements the ERC-4626 deposit/mint/withdraw/redeem interface with a virtual-share offset. Per taxonomy PD-024, ERC-4626 vault virtual-share offset is lending-only. The share inflation surface (analogous risk) was separately addressed by Certora formal verification (January 2025).
Sources #
- Docsether.fi Technical Documentationether.fi technical documentation — eETH described as 'rebasing ERC-20' not ERC-4626retrieved 2026-04-28
- Certora eETH Share Inflation Formal VerificationCertora audit 2025-01-16 — eETH share inflation formal verificationretrieved 2026-04-28
Methodology #
Determine whether ERC-4626 vaults use OpenZeppelin ≥4.9 virtual-share offset pattern to prevent first-depositor share-inflation.
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