Definition ∞ A consensus flaw represents a critical defect in a blockchain’s agreement mechanism, potentially leading to network instability or incorrect transaction validation. Such a flaw can compromise the integrity of the ledger, allowing for double-spending or unauthorized state changes. It undermines the trust in the system’s distributed agreement. This is a severe protocol vulnerability.
Context ∞ Reports of a consensus flaw typically trigger urgent responses from development teams and may result in hard forks or emergency patches to secure the network. The detection of such a vulnerability is a significant event in cryptocurrency news, often causing market volatility and raising questions about protocol robustness and reliability.
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