Byzantine Fault Tolerance

Byzantine Fault Tolerance (BFT) is a system's ability to operate correctly despite some participants behaving maliciously or unpredictably. Imagine a group trying to agree on a decision, but some members might send false or conflicting information. BFT ensures that the honest members can still reach a correct consensus despite these disruptive actions. It is vital in decentralized networks, like cryptocurrencies, to maintain trust and security when some participants could act maliciously or fail unexpectedly. Essentially, BFT guarantees reliable agreement even under adverse conditions, ensuring the system remains functional and trustworthy.