BFT Consensus Protocols enable distributed systems to agree on a single state even when some participants act maliciously. These protocols provide a fault-tolerant method for achieving agreement among nodes in a distributed network, specifically designed to withstand Byzantine faults where components can fail arbitrarily or behave maliciously. They are critical for maintaining data integrity and system reliability in blockchain and other decentralized applications. Their operational security depends on a threshold of honest participants.
Context
BFT consensus protocols are a central topic in blockchain scalability and security research, with new iterations constantly proposed to enhance transaction throughput and finality. News often covers developments in protocols like Tendermint or HotStuff, highlighting their suitability for various application-specific blockchains or enterprise solutions. Debates frequently center on the trade-offs between decentralization, performance, and the number of Byzantine nodes a system can tolerate.
A new BFT lower bound proves the minimal latency trade-off, enabling consensus protocols to achieve theoretically optimal commitment speed in all network states.
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