A protocol liveness guarantee ensures that a decentralized network will continue to process and confirm transactions, even in the presence of failures or malicious actors. This property means the blockchain system will always make progress, adding new blocks and confirming transactions, provided a sufficient number of honest participants are active. It contrasts with safety guarantees, which ensure that incorrect transactions are never confirmed. A strong liveness guarantee is fundamental for the continuous operation and utility of any decentralized ledger.
Context
Discussions around protocol liveness guarantees are central to the design and security analysis of new blockchain architectures and consensus mechanisms. News often covers updates or research related to enhancing these guarantees, particularly for networks experiencing periods of congestion or attack. This assurance is critical for maintaining user confidence in the reliability of digital asset systems.
A novel BFT protocol, Falcon, uses Graded Broadcast to bypass costly agreement stages, fundamentally improving decentralized system throughput and latency.
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