Bridge rate-limiter / chain-pause as positive mitigant
USDD (Decentralized USD)'s assessment for RD-F-185 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
USDD does not operate a bridge (has_bridge_surface: false). No per-window outflow rate-limiter documented for USDD protocol contracts. The June 2022 depeg recovery via $2B reserve deployment demonstrates TDR has a market-intervention capability, but this is economic intervention, not a code-level rate-limiter. TRON blockchain has emergency validator pause capability in principle (Tron Foundation controls supernodes) but is not a published USDD protocol-level mitigant. Yellow: partial positive mitigant exists (TDR reserve intervention) but no code-level rate-limiter confirmed.
Sources #
- InternalUSDD profile — bridge surface and reserve intervention.research/protocols/usdd/00-profile.md §7 — has_bridge_surface: false; §10 — June 2022 depeg recovery via $2B reserve deploymentretrieved 2026-05-17
- TRON stablecoin USDD loses dollar peg — CoinTelegraphCoinTelegraph — June 2022 depeg; TDR deployed ~$2B in reserves to defend pegretrieved 2026-05-17
Methodology #
Determine whether the bridge implements a per-window outflow rate-limiter (and at what cap), and whether the protocol team can trigger a chain-level or validator-set emergency pause.
See the full factor methodology and distribution across all protocols →