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rubric v1.7.0

Mixed-decimals math without explicit scaling

Circle USYC's assessment for RD-F-017 — scored gray on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

USYC is 18-decimal; USDC is 6-decimal. Teller performs subscription and redemption math between them. Source verified but no manual review or tool run available to confirm explicit decimal scaling. Gray — needs tool run.

Sources #

  • Etherscan
    Teller Implementation - EtherscanTeller implementation source verified v0.8.26; decimal mismatch risk between USYC (18) and USDC (6) requires code reviewretrieved 2026-05-16

Methodology #

Determine whether shared numerator/denominator arithmetic operates over tokens with different decimals without WAD/RAY normalization or explicit decimal-adjustment.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol circle-usyc factor RD-F-017 score gray collected_at 2026-05-15 21:56:43