Stablecoin depeg >2% on shared-LP venue

Concrete's assessment for RD-F-104 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Stablecoin depeg signal: T-09 v1 launch signal, applicable and no current fire. Concrete vaults hold USDT (ctStableUSDT, DeFi USDT vault with $50.1M TVL) and frxUSD (ctStablefrxUSD) — stablecoin exposure is material (>5% of TVL threshold for signal eligibility). Chainlink feeds confirm: USDT/USD feed 0x3E7d1eAB13ad0104d2750B8863b489D65364e32D (heartbeat 86400s, deviation threshold 0.25%); USDC/USD feed 0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6 (heartbeat 82800s, deviation threshold 0.25%). As of 2026-05-17: USDT and USDC are on-peg; frxUSD is stable; no >2% depeg event on any major stablecoin with protocol exposure. Signal is correctly scoped and would fire appropriately if USDT/USDC were to depeg given the material vault exposure.

Sources #

Internal
Concrete data cache Chainlink stablecoin feedsdata cache §sources.oracle_feeds — USDT/USD feed 0x3E7d1eAB13ad0104d2750B8863b489D65364e32D heartbeat 86400s dev 0.25%; USDC/USD 0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6 heartbeat 82800s dev 0.25%retrieved 2026-05-17
Etherscan
ctStableUSDT VaultProxy — USDT stablecoin exposure confirmedVaultProxy ctStableUSDT 0x6503de9FE77d256d9d823f2D335Ce83EcE9E153f — Stable USDT Pre-Deposit Vault confirming USDT exposureretrieved 2026-05-17

Methodology #

Detect whether a stablecoin in this protocol's dependency graph depegs >2% on a venue with shared liquidity.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol concrete factor RD-F-104 score green collected_at 2026-05-17 14:36:59