ERC-777/1155/721 hook without reentrancy guard

Usual (USD0 / bUSD0 / USUAL)'s assessment for RD-F-015 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

USD0, bUSD0, USUAL are ERC-20 tokens (no callback hooks). DaoCollateral integrates USYC, USTBL, M (ERC-20 RWA tokens) and USDC — no ERC-777/1155/721 token standards in integration set. No callback-hook risk.

Sources #

Etherscan
USD0 Implementation — EtherscanUSD0 impl — ERC20PausableUpgradeable, no ERC-777retrieved 2026-05-17
Docs
Usual Protocol DocsUsual docs — collateral: USYC, USTBL, M — all ERC-20retrieved 2026-05-17

Methodology #

Determine whether the protocol integrates token standards with callbacks (ERC-777 tokensReceived, ERC-1155 onReceived, ERC-721 onReceived) without reentrancy guards on the affected functions.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol usual factor RD-F-015 score green collected_at 2026-05-16 20:39:44