Single-pool oracle (no medianization)
USDD (Decentralized USD)'s assessment for RD-F-056 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
NOT a single-pool oracle. USDD uses a Median contract that aggregates from multiple whitelisted oracle sources (at minimum Chainlink and WINkLink). USDD docs confirm the Median 'maintains a whitelist of price feed contracts which are authorized to post price updates' and 'computes and updates the stored value when a new list of prices is received.' ChainSecurity Jan-2025 audit confirmed correct Median architecture deployment.
Sources #
- AuditPUBLIC Code Assessment of USDD V2 Smart Contracts, January 24 2025ChainSecurity USDD V2 audit Jan 2025 confirms Median architecture deployed and connected correctlyretrieved 2026-05-17
- USDD Median Contract DocsMedian contract docs: 'maintains a whitelist of price feed contracts which are authorized to post price updates; computes and updates the stored value when a new list of prices is received'retrieved 2026-05-17
Methodology #
Determine whether the oracle reads from a single DEX venue with no medianization across multiple pools or venues.
See the full factor methodology and distribution across all protocols →