Solana schedules Alpenglow consensus upgrade for October 21
Solana core developer Anza announced that the Alpenglow consensus upgrade is set to activate on mainnet-beta on October 21, targeting 150-millisecond transaction finality.
Solana core developer Anza announced that the Alpenglow consensus upgrade is scheduled to go live on Solana mainnet-beta on Wednesday, October 21, at approximately 14:50 UTC. The transition represents 18 months of development and is planned to take effect in a single-slot migration. Outlet SolanaFloor characterized Alpenglow as the network's largest consensus upgrade to date.[2][3][4]
According to reports by Wu Blockchain and Crypto Banter, Alpenglow replaces Solana's existing TowerBFT consensus mechanism with Votor. The primary goal is reducing transaction finality from roughly 12.8 seconds to about 150 milliseconds, an estimated 85-fold improvement. The protocol is also designed to tolerate up to 40% of network stake going offline.[2][3][4]
Under the new system, validators will exchange votes directly off-chain instead of submitting them as on-chain transactions, freeing network capacity for user transactions. As a result, reported Solana transaction totals that count validator votes may see a significant decline. Alpenglow previously activated on testnet on September 24 and devnet on September 25, while Crypto Briefing reported that the changes are aimed at boosting network efficiency and resilience.[1][3][4][5]
Key facts
- Solana core developer Anza announced that Alpenglow will activate on mainnet-beta on Wednesday, October 21, at approximately 14:50 UTC.
- The upgrade aims to reduce Solana's transaction finality from roughly 12.8 seconds to about 150 milliseconds.
- Alpenglow replaces Solana's TowerBFT consensus mechanism with Votor in a single-slot migration following 18 months of development.
- Validator votes will move off-chain rather than processing as on-chain transactions, which may lower reported aggregate transaction counts while opening block space for user transactions.
- The consensus protocol is designed to tolerate up to 40% of stake going offline.
- Alpenglow was activated on Solana's testnet on September 24 and on devnet on September 25.
Sources · 4 sources
- CB
Crypto BriefingArticle ·
Solana’s Alpenglow upgrade targets October 21 for 150ms finality The Alpenglow upgrade could significantly boost Solana's network efficiency and market position, potentially influencing investor confidence. The post Solana’s Alpenglow upgrade targets October 21 for 150ms finality appeared first on Crypto Briefing .
Open source - SO
SolanaFloor@SolanaFloorPost on X ·
🚨BREAKING BIG: Alpenglow, @Solana’s biggest consensus upgrade in history, is set to go live on mainnet October 21, targeting 150ms finality, roughly 85× faster than the current 12.8 seconds. https://t.co/kc7vngaJZ5
Open source - CB
Crypto Banter@crypto_banterPost on X ·
🚨SOLANA ALPENGLOW GOES LIVE OCTOBER 21! @anza_xyz confirmed Alpenglow activates on Solana mainnet-beta Wednesday, October 21, around 14:50 UTC. The new consensus replaces TowerBFT and cuts finality from seconds to about 150 milliseconds in a single-slot migration. Votes move off-chain, freeing more capacity for user transactions, and the protocol tolerates up to 40% of stake going offline.
Open source - WB
Wu Blockchain@WuBlockchainPost on X ·
Solana’s Alpenglow Upgrade Scheduled for October 21, Targets Finality Cut from 12.8 Seconds to 150ms Solana core developer Anza announced that the Alpenglow consensus upgrade is scheduled to go live on Solana mainnet-beta on October 21 at approximately 14:50 UTC. The upgrade will replace the existing TowerBFT consensus mechanism with Votor, aiming to reduce transaction finality from approximately 12.8 seconds to 150 milliseconds. Under the new mechanism, validators will exchange votes directly instead of submitting them as onchain transactions, potentially causing a significant decline in reported transaction totals that include validator votes. Alpenglow was previously activated on testnet on September 24 and devnet on September 25.
Open source - CB
Crypto BriefingArticle ·
Solana’s Alpenglow upgrade to enhance transaction speed on October 21 The Alpenglow upgrade could boost Solana's network resilience and investor confidence, potentially impacting its market value positively. The post Solana’s Alpenglow upgrade to enhance transaction speed on October 21 appeared first on Crypto Briefing .
Open source