Definition ∞ The classical BFT bound specifies the highest count of malicious nodes a Byzantine Fault Tolerant system can withstand while maintaining correct operation. This limit typically stands at one-third of the total network participants. It sets a theoretical threshold for security in distributed consensus protocols. Understanding this bound is essential for designing robust blockchain architectures.
Context ∞ The classical BFT bound remains a foundational concept in the construction and analysis of numerous blockchain consensus algorithms. Current research investigates methods to exceed this traditional limit or to apply it effectively in permissioned and permissionless networks. Debates persist concerning its practical use in highly scalable systems.
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