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Solana Alpenglow: Transaction Finality Drops to 150 Milliseconds

Solana Alpenglow replaces Proof-of-History and TowerBFT with Votor and Rotor, cutting finality from 12.8 seconds to 150ms. The biggest protocol upgrade in Solana's history is targeting mainnet by end of 2026.

By Giulia Ferrante

Article overview

Solana Alpenglow replaces Proof-of-History and TowerBFT with Votor and Rotor, cutting finality from 12.8 seconds to 150ms. The biggest protocol upgrade in Solana's history is targeting mainnet by end of 2026.

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