Mysticeti: Reaching the Latency Limits with Uncertified DAGs
Kushal Babel
Network and Distributed System Security (NDSS) Symposium 2025 · Day 2 · Network Security 2
This article delves into Mysticeti, a novel **Byzantine fault-tolerant (BFT)** consensus protocol developed by Mist Labs, presented by Kushal Babel at the NDSS Symposium. Mysticeti belongs to the family of **Proof-of-Stake (PoS)** consensus mechanisms, designed to operate within a predefined set of validators while tolerating both network and machine failures, as well as the malicious behavior of up to one-third of the participating nodes. The core objective of such protocols is to ensure that all honest validators eventually agree on the same state, which, in Mysticeti's application within blockchain, primarily involves agreeing on a definitive list of transactions.
AI review
Legitimate distributed systems research with a real production deployment backing the claims — Sui mainnet is not a toy environment, and the latency reduction numbers are concrete. The uncertified DAG trade-off (half-round-trip element creation vs. three-round finality) is a genuine design contribution, but the talk as summarized reads closer to a well-structured conference paper presentation than a research bombshell.