Formal verification coverage

Usual (USD0 / bUSD0 / USUAL)'s assessment for RD-F-009 — scored gray on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

No formal verification engagement found. Certora SecurityReports GitHub (github.com/Certora/SecurityReports) shows no Usual/USD0 entries. No Halmos or Kani disclosures found. Usual-dao GitHub org has only 6 public integration-fork repos with no FV tooling. Private repo prevents confirming or denying internal FV use.

Sources #

GitHub
Certora Security Reports RepositoryCertora SecurityReports — no Usual entry foundretrieved 2026-05-17
GitHub
usual-dao GitHub OrganizationUsual-dao GitHub org — 6 public repos, all integration forksretrieved 2026-05-17

Methodology #

Determine the percentage of protocol-declared critical invariants covered by a formal verification proof (Certora Prover, Kani, Halmos, or equivalent).

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol usual factor RD-F-009 score gray collected_at 2026-05-16 20:39:44