Solana’s Alpenglow, its biggest network overhaul since 2020, goes live Wednesday
Solana is implementing its 'Alpenglow' upgrade, its largest network overhaul since 2020, which will significantly change how validators agree on transactions by moving voting off-chain and bundling votes into certificates. This aims to reduce transaction finality time from six seconds to a fraction of a second and cut validator fees by approximately 60%.
Why it matters
This upgrade could dramatically improve Solana's transaction speed and efficiency, making it more competitive with centralized payment systems and exchanges, potentially boosting its appeal for high-frequency trading and real-time applications, while also reducing operational costs for validators.
The upgrade changes how validators, the computers that process transactions and vote on which ones are valid, agree with each other.
Today, every validator writes its votes straight onto the blockchain like any other transaction, and a payment isn’t locked in until enough of them stack up — which takes about six seconds.
Alpenglow pulls that voting off the chain and bundles votes into certificates that can lock in a transaction in one or two rounds. If the 150-millisecond target holds up on mainnet, a Solana transaction would be settled in less time than it takes to blink.
Six seconds is a long time in a fast market, where a price can move before a trade is locked in, and exchanges and payment apps make users wait before treating a deposit as done.
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