Data Availability Servers (DAS)

Committee members operate Data Availability Servers (DAS), which expose two essential APIs:

  1. Sequencer API: Meant exclusively for use by the Arbitrum chain's Sequencer, this JSON-RPC interface enables the Sequencer to submit data blocks to the DAS for storage.

  2. REST API: Designed for broader accessibility, the RESTful HTTP(S)-based protocol allows data blocks to be retrieved by hash. It is fully cacheable, and deployments may incorporate caching proxies or CDNs to enhance scalability and protect against potential DoS attacks.

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