Guardian/pause-keeper distinct from upgrader

Evidence summary #

Guardian / pause-keeper role distinct from upgrader | No separate pause-keeper exists on the Core Bridge (no pause function found). Guardian set is the single authority for all privileged operations. NTT contracts have a distinct `pauser` role. No role separation between pauser and upgrader at the Core Bridge level. | NTT docs; Governance.sol; Bridge.sol analysis | **yellow**

Sources #

Methodology #

Determine whether a pauser/guardian role exists and is held by an address distinct from the upgrader address.

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