Stale-approval exposure on deprecated router

Superstate's assessment for RD-F-168 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

No deprecated router or swap-path contract identified in the USTB/USCC ecosystem. AllowListProxy and RedemptionIdle proxy are current-version contracts, not deprecated routers. Users interact with fund tokens (USTB/USCC) directly; no swap router pattern exists that would accumulate stale user ERC-20 approvals.

Sources #

GitHub
Superstate mainnet.json - No Deprecated Routersuperstateinc/ustb repo: AllowListProxy, RedemptionIdle are current-version; no deprecated router/swap contract in architectureretrieved 2026-05-16

Methodology #

Count the number of active user approvals (ERC-20 `allowance`) to deprecated router or protocol contracts.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol superstate factor RD-F-168 score green collected_at 2026-05-16 00:06:37