Anza Puts Solana’s Alpenglow Consensus Switch on the Mainnet Calendar for Oct. 21
By Unchained

AI summary of the source article
Solana software developer Anza announced that the Alpenglow consensus protocol will launch on mainnet-beta on Oct. 21. The upgrade replaces TowerBFT and is designed to cut transaction finality to approximately 150 milliseconds.
Why it matters
Anza stated that the migration will cause finality to fall "from seconds to ~150ms" and that moving validator votes off-chain into a single certificate "frees up block space."
Key facts
- Alpenglow is scheduled to activate on Solana's mainnet-beta on Oct. 21 at around 14:50 UTC, replacing TowerBFT.
- The migration is expected to reduce finality from about 12.8 seconds to roughly 150 milliseconds.
- Validator votes will move off-chain as BLS-signed messages combined into a single certificate, freeing up block space.
Source excerpt · Unchained
The Solana developer says the move off TowerBFT will take place in a single slot and bring finality down to about 150 milliseconds, after Alpenglow ran on testnet and devnet last month. The post Anza Puts Solana’s Alpenglow Consensus Switch on the Mainnet Calendar for Oct. 21 appeared first on Unchained .