Binance – Why You Should Care About Data Availability

The data availability problem is crucial in ensuring all network participants can access data in a newly proposed block. Dedicated DA layers have emerged due to the high costs of posting data directly to major Layer-1s like Ethereum. This technical report explores major DA players and the technical primitives behind their solutions. Protocols like Celestia and Avail use data availability sampling efficiently for high security, while EigenDA introduces a dispersal protocol for scalability. Additionally, KZG is used for faster data availability finality. Trade-offs in scalability, security, and finality speed are considered in protocol design, leading to differences in cost and effectiveness. Project teams must weigh these factors when choosing a protocol.