Fast Feed: Constitutional AIP

Abstract

This Constitutional AIP proposes to establish the Fast Feed, a paid, authenticated data streaming product for Arbitrum One. The Fast Feed allows subscribers to get updates on transactions, their relative ordering, and related transaction metadata earlier than they would otherwise via the regular feed. The Fast Feed makes that stream accessible to Arbitrum's ecosystem as a specialized, subscription-based data product.

This feed will be paid-only to mitigate against DoS risks and to help ensure a reliable and stable connection for teams who wish to use it. The Fast Feed's design should not introduce new types of MEV, frontrunning, nor sandwich attacks because the feed only publishes read-only information about the transactions after their