AIP: Batch Poster Manager and Sequencer Inbox Finality Fix
AI summary
This proposal, a Constitutional Arbitrum Improvement Proposal (AIP), introduces two technical changes to Arbitrum One and Arbitrum Nova. First, it creates a "batch poster manager" role, allowing the sequencer operator to manage who can post transaction batches, including rotating keys if compromised. Second, it increases the `MaxTimeVariation` parameters (`futureBlocks` to 64 and `futureSeconds` to 768) to align with Ethereum's post-merge finality guarantees, making batch posting more resilient to minor blockchain reorganizations.
If passed, the Arbitrum network will become more robust against potential key compromises of the batch poster and less susceptible to issues caused by Ethereum blockchain reorganizations. This benefits all users by improving network stability and security, with no apparent negative impact on any specific group.
Voting results
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Constitutional
Abstract
This Constitutional AIP proposes two improvements to batch posting for Arbitrum One and Arbitrum Nova:
- Batch Poster Manager: Introduce a “batch poster manager” role with the ability to grant/revoke batch-posting affordances.
- Increase MaxTimeVariation: Change the max-time-variation “future blocks” and “future seconds” values to 64 and 768, respectively, in line with Ethereum’s proof of stake finality guarantees.
These changes will allow the system to be more resilient, and don’t represent a change to the system’s current trust model.
Motivation
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