Solana Labs spinout Anza proposes Alpenglow, 'the biggest change to Solana’s core protocol'

Description

Anza, the developer studio spun out of Solana Labs, published a white paper that proposes swapping out Solana’s existing TowerBFT proof-of-stake consensus mechanism with “Votor.”

Authors

Daniel Kuhn

Publish date

May 19, 2025

Publisher

The Block

Web URL

https://www.theblock.co/post/354934/solana-labs-spinout-anza-proposes-alpenglow-the-biggest-change-to-solanas-core-protocol

Referenced by

Anza launches Alpenglow

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A block can be notarized in one round if 80% of stake approve it, or in two rounds if 60% approve, using parallel voting tracks for faster and more scalable processing.

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The upgrade replaces Solana’s existing TowerBFT proof-of-stake consensus mechanism and proof-of-history timestamping system with new components called Votor and Rotor.

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