# Optimism's proposed fallback proposer rotation

> Optimism seeks authorization for the OP Enterprise proposer address, with execution targeted for November 5.

- URL: https://riadefi.com/on-chain/2026-10-27-optimism-mainnet-proposer-rotation/
- Type: Control change
- Stage: Proposed
- Evidence: confirmed
- Materiality: watch
- Event date: 2026-10-27
- Version: 1, published 2026-10-28 (first published 2026-10-28)
- Follow-up: 2026-11-05
- Advisor-relevant: yes
- Affects: Optimism canonical bridge (protocol)

## What happened

Optimism proposed rotating OP Mainnet's permissioned fallback proposer on October 27, according to its official governance proposal.

## What changed

Optimism seeks authorization for the OP Enterprise proposer address, with execution targeted for November 5.

## What did not change

Optimism proposes keeping the permissionless respected game, fallback implementation, and zero initial bond unchanged.

## Confirmed

- Optimism proposes replacing 0x473300df21D047806A082244b417f96b32f13A33 with 0xc27ba3E0Fc01567a5E57Ae0c391AA98cECBA5bE0 as the fallback proposer.
- The proposal states that the veto period ends on November 3, 2026.
- The proposal identifies the Foundation Upgrade Safe and Security Council as the parties controlling the required owner Safe.
- Optimism states that users need to take no action.

## Still open

- The proposal does not establish completed approval or execution.
- Optimism may need to repeat its simulation if execution preconditions change.

## What it means for an advisor

- Ketju should check the approval outcome and executed proposer address before updating the memo's description of authorized operators.
- The proposal supports no change to the memo's withdrawal assumptions before execution.

## Sources

1. [OP Mainnet proposer rotation proposal](https://gov.optimism.io/t/maintenance-upgrade-proposal-op-mainnet-proposer-rotation/10939) · Optimism Collective · 2026-10-27


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Published by Ketju Research on RIADeFi (https://riadefi.com). Educational research for financial professionals; not investment, legal, tax, or compliance advice.