Alpenglow Testnet Launched on Solana

Solana's Alpenglow consensus upgrade is one step closer to deployment as it moves into public testnet. The upgrade aims to reduce transaction finality from around 13 seconds to approximately 150 milliseconds, making it significantly faster than the current system.

Alpenglow replaces TowerBFT with Votor, a new protocol that allows validators to exchange votes directly, reducing the number of voting rounds required for agreement. This change will not affect how applications execute transactions or how users interact with the blockchain.

The public testnet uses tokens without monetary value, allowing developers to restart the network and test migration procedures without putting mainnet funds at risk. Validators participating in the Alpenglow test need to run Agave 4.3, the latest branch of the main validator software maintained by Anza.