Signer rotation recency

Evidence summary #

Signer rotation recency | Guardian set was expanded from 13 to 19 historically. No guardian set change has been published in 2024-2025 for the main Ethereum Core Bridge. Guardian set index is stored on-chain; last change date not determinable from available sources without direct chain query. | Etherscan (guardian set index method); Profile §6 note "guardian set has expanded" | gray

Sources #

Methodology #

Measure the number of months since the most recent signer-set change (add/remove signer) on the admin multisig; flag if threshold was reduced within 14 days of a timelock removal or new-signer addition.

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