Oracle role per asset

Circle USYC's assessment for RD-F-049 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

NAV oracle (0x74f2199AEb743f68f05943e5715A33EaF2b61f53) is sole primary oracle for USYC pricing. No secondary or fallback oracle identified in Teller or token contract. YieldCoin impl ABI shows OracleSet event confirming oracle is admin-configurable but only one oracle address is used. Single-oracle design with no fallback.

Sources #

Etherscan
Teller Implementation - EtherscanTeller implementation ABI at 0xF8724D6b9E6fF55Bc4496fddb3437DC691CD26EB shows setOracle function - single oracle slot, no secondary oracleretrieved 2026-05-16
Etherscan
YieldCoin Implementation - EtherscanYieldCoin implementation ABI at 0xBF0f2F3aad6b99893d80c550fbacec915545eb92 shows OracleSet event - oracle is configurable but singleretrieved 2026-05-16

Methodology #

For each oracle, classify its role as Primary / Secondary / Fallback per asset/market.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol circle-usyc factor RD-F-049 score yellow collected_at 2026-05-15 21:56:43