Oracle staleness check present
crvUSD (Curve Stablecoin)'s assessment for RD-F-059 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
CryptoWithStablePriceAndChainlink oracle family: CHAINLINK_STALE_THRESHOLD check confirmed — evaluates block.timestamp - min(chainlink_lrd.updated_at, block.timestamp) <= CHAINLINK_STALE_THRESHOLD before using Chainlink data; falls back to Curve EMA if stale. Exact threshold value not independently read (commonly 90,000s in Curve oracle contracts [?]). AggregatorStablePrice has no Chainlink feed, so no staleness check needed there.
Sources #
- EtherscanCryptoWithStablePriceAndChainlinkFrxeth — EtherscanCryptoWithStablePriceAndChainlinkFrxeth Etherscan source: CHAINLINK_STALE_THRESHOLD staleness check on updatedAt confirmedretrieved 2026-05-16
- CryptoWithStablePriceAndChainlinkFrxeth code — EtherscanWeb search result confirming CHAINLINK_STALE_THRESHOLD code pattern: if block.timestamp - min(chainlink_lrd.updated_at, block.timestamp) <= CHAINLINK_STALE_THRESHOLDretrieved 2026-05-16
Methodology #
Determine whether the protocol rejects oracle reads older than a declared maximum age (i.e., checks `updatedAt > block.timestamp - maxStaleness`).
See the full factor methodology and distribution across all protocols →