Dependency tree uses EOL Solidity version

Usual (USD0 / bUSD0 / USUAL)'s assessment for RD-F-174 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Solidity 0.8.20 and 0.8.22 are NOT EOL. They are in the active 0.8.x maintenance series receiving security patches. OZ upgradeable contracts compiled at 0.8.20 are actively maintained.

Sources #

Etherscan
L1OFTAdapter — EtherscanL1OFTAdapter — Solidity 0.8.22 (active version)retrieved 2026-05-17
Etherscan
USD0 Implementation — EtherscanUSD0 impl — Solidity 0.8.20 (active version)retrieved 2026-05-17

Methodology #

Determine whether the deployed code or its dependencies use an EOL or unsupported Solidity version without a forward-compatibility patch.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol usual factor RD-F-174 score green collected_at 2026-05-16 20:39:44