Byzantine Fault Resilience (BFR) refers to the ability of a system to continue functioning correctly even when some of its components may fail or act maliciously. This concept is named after the Byzantine Generals Problem, which illustrates challenges in achieving consensus among multiple parties when some may not cooperate. In decentralized networks, such as blockchains, BFR is crucial because it ensures that the system can reach an agreement on the state of the network despite the presence of faulty or adversarial nodes. This is important for preventing issues like double-spending and ensuring that all participants can trust the integrity of transactions.Protocols that achieve Byzantine Fault Resilience typically require a majority of honest nodes to agree for decisions to be valid, making it difficult for malicious actors to disrupt the system. Byzantine Fault Resilience enhances the robustness and reliability of decentralized systems, contributing to their overall security and efficiency.