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Alpenglow: A New Consensus for Solana - Anza

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We proudly present Alpenglow, Solana’s new consensus protocol. Alpenglow is a consensus protocol tailored for a global high-performance proof-of-stake blockchain. We believe that the release of Alpenglow will be a turning point for Solana. Alpenglow is not only a new consensus protocol, but the biggest change to Solana’s core protocol since, well, ever. When moving to Alpenglow, we say goodbye to a number of legacy components of the core protocol, in particular, TowerBFT and Proof-of-History. We instead introduce Votor, which takes over the voting and block finalization logic. Moreover, rather than relying on gossip, Alpenglow adopts a faster direct communication primitive. Despite being a big change, Alpenglow builds on Solana’s biggest strengths. Turbine has played a crucial role in the Solana network’s success as it addresses the important aspect of data dissemination. In blockchains of the past, the leader was often the bottleneck of the system. In contrast, Turbine features a tech

Alpenglow: A New Consensus for Solana - Anza Back to Blog Table of Contents Highlights Alpenglow: A New Consensus for Solana Written By Quentin Kniep, Kobi Sliwinski, and Roger Wattenhofer May 19, 2025 We proudly present Alpenglow, Solana’s new consensus protocol. Alpenglow is a consensus protocol tailored for a global high-performance proof-of-stake blockchain. We believe that the release of Alpenglow will be a turning point for Solana. Alpenglow is not only a new consensus protocol, but the biggest change to Solana’s core protocol since, well, ever. When moving to Alpenglow, we say goodbye t

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