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rubric v1.7.0

Bridge signer-set change proposed/executed

Circle USYC's assessment for RD-F-103 — scored not_applicable on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Circle's Cross Chain Teller is a proprietary issuer-controlled mechanism, not a public validator-set bridge. There is no Guardian set, no LayerZero DVN, no Wormhole-style signer set. The Cross Chain Teller for Ethereum-BSC coordination does not have a public signer registry matchable to the SignerAdded/SignerRemoved event pattern that RD-F-103 targets. The profile confirms this is NOT LayerZero (layerzero.present: false) and NOT CCTP.

Sources #

  • Docs
    USYC Smart ContractsUSYC smart contracts - Cross Chain Teller role described as proprietary issuance coordinationretrieved 2026-05-16
  • Internal
    circle-usyc profile - cross-chain architecture00-profile.md section 7 - Cross Chain Teller is proprietary Circle mechanism; NOT LayerZero; NOT a third-party bridgeretrieved 2026-05-16

Methodology #

Detect whether a bridge validator or signer-set change has been proposed or executed.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol circle-usyc factor RD-F-103 score not_applicable collected_at 2026-05-15 21:56:43