Hardware Ready Ready to Bench?
On October 22, 2026, the Solana network completed the activation of the Alpenglow upgrade on mainnet. The intervention, which took place at 13:54 UTC on Wednesday according to onchain data confirmed by Unchained, replaces the TowerBFT consensus protocol in use since 2020 with a new voting system. CoinDesk defines it as the largest network update since the last overhaul of 2020, while Decrypt describes it as the most ambitious intervention since Ethereum’s Merge. The Solana Foundation and Anza supervised the transition, which marks a structural change to how nodes reach consensus on block validity.
Why it matters
The main objective of Alpenglow is to drastically reduce the time required for transaction finality. According to data provided by CoinDesk and Unchained, the new system aims for a target of approximately 150 milliseconds under normal conditions. Cointelegraph indicates that this would represent a 99% reduction compared to previous times. For developers and users, this translates into nearly instantaneous settled transactions, making applications built on the network more responsive. However, Anza, the company behind Solana’s Agave software, clarified that some nodes might receive finality information with a slight delay compared to validators voting directly. This technical distinction is relevant for understanding how data propagates through the network before definitive confirmation.
The numbers
The switch to the new protocol occurred within a time window of approximately 900 milliseconds. At the moment of initial block certification, 446 validators participated in the confirmation out of a total of 654 active nodes on the network. It is important to note that transactions will no longer be recorded as votes on the blockchain; consequently, network dashboards will show a decrease in reported transaction totals, while operational costs and application functionality remain unchanged. This accounting change alters the visual metric of traffic without impacting the platform’s economic efficiency.
What remains to be understood
The 150-millisecond value represents a target under standard conditions and does not constitute a guarantee for every single payment. Furthermore, the path toward definitive activation was not linear: CoinDesk reports that the months of testing prior to launch included a migration failure and a subsequent rollback. Onchain data now confirms the replacement of the consensus engine, but the long-term impact on load distribution among validators remains to be observed in the coming weeks. The stability of the new system under maximum load will be the determining factor for its full adoption.
Sources: CoinDesk, CoinDesk, Decrypt, Cointelegraph, Unchained.
This article is for informational purposes only and does not constitute financial advice or an investment recommendation.
* Content created with the assistance of artificial intelligence systems.