Celestia is a modular data availability network that makes it easy for anyone to securely launch their own blockchain. Celestia is optimized for ordering transaction data and making it available for anyone to download and verify with a light node.

Formerly known as the Quantum Gravity Bridge (QGB), Blobstream relays commitments to Celestia’s data root to an on-chain light client, enabling EVM developers to create high-throughput L2s as easily as they develop smart contracts.

Zellic conducted a security assessment for Celestia from February 29th to March 4th, 2024. During this engagement, Zellic reviewed Blobstream X's code for security vulnerabilities, design issues, and general weaknesses in security posture.