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Data Availability Certificate

Definition ∞ A Data Availability Certificate is a cryptographic proof asserting that specific data, often from a Layer-2 rollup, has been published and is accessible to all network participants. This certificate provides verifiable assurance that the data necessary to reconstruct the rollup state is indeed available. It helps maintain the security and integrity of off-chain computations.
Context ∞ Data Availability Certificates are gaining prominence in the discourse around blockchain scalability, particularly with the growth of rollups and other Layer-2 solutions. News reports frequently discuss their role in ensuring the integrity of these scaling mechanisms, which rely on the main chain to verify data availability. These certificates are crucial for preventing data withholding attacks and maintaining user confidence in off-chain processing.

Abstract digital constructs, represented by glowing blue binary code streams, emanate from a central nexus within a futuristic, toroidal structure. This structure, composed of interlocking white segments and internal mechanical components, appears to be part of a larger orbital station or a distributed ledger technology network. A satellite dish extends from one side, suggesting data transmission or network connectivity in a decentralized space. The visual implies advanced cryptographic operations and secure interplanetary communication protocols, possibly for DAO governance or decentralized finance DeFi applications in space.

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Decoupling BFT Consensus Pacing from Data Dissemination Achieves Optimal Performance

Angelfish introduces a Leader-DAG spectrum consensus, achieving the theoretical optimal latency of leader-based BFT with the peak throughput of DAG protocols.