unichain - Notice history

A sequencer stall has led to the sequencer needing to resync from an earlier snapshot of the chain. This has led to no new blocks being produced while the sequencers catch up.

The op-node rejected some batches from the batcher and the safe head stalled out for 12 hours. Consequently, a re-org occurred. The batcher is correctly posting again.

Due to an issue with the batcher, there was a deep reorg. Unichain Sepolia has recovered at this time. Users who are running full (non-archive) nodes will need to re-sync the chain.

At 12:00 AM PST, our active sequencer stalled and failed to derive or produce any further blocks. We have identified the issue as being related to the communication between op-geth and op-node over the Auth RPC port. We have mitigated this issue by restarted the sequencing nodes.