Summary
The Optimism Mainnet blockchain experienced outages and instabilities starting at 6:00 am ET on February 15, 2024. The team identified the cause and applied a fix, but the resolution was short-lived. The network resumed around 8:00 am ET after the suspected root cause was found. The outage resulted in single-block reorganizations of the unsafe chain. Some community members dispute that no action was required from users or node operators. The incident was unrelated to a planned withdrawal pause. The planned pause was intended to test Optimism’s incident response capabilities.
Key Points
1. The Optimism Mainnet blockchain experienced outages and instabilities on Feb. 15, 2024, with the sequencer temporarily stopping the production of blocks.
2. The initial fix applied by the developers restored operations briefly, but reports of additional instability raised concerns about the effectiveness of the patch.
3. The network resumed after the suspected root cause was identified, and it was confirmed that the incident was unrelated to the planned maintenance window for OP Mainnet withdrawals.