Solana’s biggest network change since 2020 is live. Here’s how users benefit

Solana switched on its Alpenglow upgrade Wednesday, introducing a new voting system designed to make payments and trades final in a fraction of a second. The upgrade targets about 150 milliseconds before the network considers a transaction locked in, replacing the multi-second wait under its previous system. That point is called finality, when an application can treat the payment as settled. Previously, they recorded votes as transactions on the blockchain and accumulated approvals across successive blocks. Alpenglow lets them send votes directly to one another and combine those approvals into certificates, allowing a block to become final after one or two voting rounds. The handover from the old system took about 900 milliseconds, according to the Solana Foundation.

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