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Fault-Tolerant Agreement

Definition

Fault-tolerant agreement describes a property of distributed systems where all honest participants can reach consensus on a single value, even if some participants behave maliciously or fail. This agreement mechanism is fundamental to blockchain technology, ensuring the integrity and consistency of transaction records across a decentralized network. It enables systems to continue operating correctly despite the presence of errors or adversarial nodes. Such resilience is a core requirement for reliable distributed ledgers.