Solc version used (known-bug versions flagged)

Usual (USD0 / bUSD0 / USUAL)'s assessment for RD-F-170 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Core contracts: Solidity v0.8.20+commit.a1b79de6, Shanghai EVM, optimization 200 runs. L1OFTAdapter: v0.8.22+commit.4fc1097e, Paris EVM, optimization 200 runs. Neither version on known-bug list. TransientStorageClearingHelperCollision (high-severity, 0.8.28–0.8.33) not applicable.

Sources #

Etherscan
USD0 Implementation — EtherscanUSD0 impl — v0.8.20+commit.a1b79de6, Shanghairetrieved 2026-05-17
Etherscan
L1OFTAdapter — EtherscanL1OFTAdapter — v0.8.22+commit.4fc1097e, Parisretrieved 2026-05-17
URL
Solidity Compiler Bug Database — EtherscanSolidity known bug database — 0.8.20 and 0.8.22 clearretrieved 2026-05-17

Methodology #

Identify the Solidity compiler version used for deployed bytecode and flag if it appears on the known-bug list (solc bugs.json or Vyper 0.2.15–0.3.0 range).

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol usual factor RD-F-170 score green collected_at 2026-05-16 20:39:44