Definition ∞ A Quorum Certificate is a cryptographic signature or collection of signatures from a sufficient number of validators in a blockchain network, attesting to the validity of a particular block or state. This certificate serves as proof that a supermajority of participants has agreed on a specific event or data point. It is central to Byzantine Fault Tolerance.
Context ∞ Quorum certificates are a fundamental component of many proof-of-stake and BFT-based consensus protocols, providing strong finality and security guarantees. The generation and verification of these certificates are critical for maintaining network integrity and preventing forks.
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