Solana has rolled out its Alpenglow upgrade, replacing its previous voting mechanism with a new system designed to finalize transactions in milliseconds. The change aims to improve settlement speeds for payments and trades across the network.

Alpenglow targets transaction finality of around 150 milliseconds, compared with the several seconds users could previously wait. Finality is the point at which a transaction is considered settled, giving applications greater confidence that a payment has been completed.

Previously, validators submitted votes as on-chain transactions and accumulated approvals across multiple blocks. The new mechanism allows validators to exchange votes directly and combine them into certificates, enabling blocks to reach finality after one or two voting rounds.

The Solana Foundation said the transition from the previous system took approximately 900 milliseconds. Of the network’s 654 participating validators, 446 voted to certify the block used to establish the starting point for the new system. This figure describes the system transition rather than the finality time for individual transactions.

Faster Transaction Settlement for Solana Users

Before Alpenglow, many Solana applications showed transactions as confirmed before the network had fully finalized them. Although users could see a successful payment quickly, applications sometimes needed to wait longer before treating the transaction as settled.

The new system aims to reduce that delay, allowing services to recognize completed payments sooner and with stronger settlement assurances.

This could be particularly useful for businesses that need to release funds or deliver goods immediately after a payment arrives.

For example, exchanges could credit customer deposits faster, allowing users to begin trading sooner. Merchants accepting stablecoins could also verify payments without requiring customers to wait through a longer settlement process.

Actual confirmation speeds will still vary depending on how applications receive and process network updates. Anza, the developer behind Solana’s Agave software, told CoinDesk that some computers may receive finality information later than validators directly involved in the voting process.

The 150-millisecond figure is a target under normal network conditions, not a guarantee that every transaction will settle within that timeframe.

Users can continue sending funds through their existing wallets, with no changes to transaction fees or the usual payment process.

The performance gains instead come from changes to communication between validators, the computers responsible for verifying transactions and agreeing on the blockchain’s records.

Alpenglow May Affect Solana Activity Metrics

The upgrade also changes how certain network operations appear in transaction statistics.

Under the previous system, validator votes were recorded as individual blockchain transactions. Alpenglow removes those votes from the same on-chain transaction-counting process, potentially reducing the totals displayed by blockchain explorers and analytics platforms.

Consequently, a sudden decline in reported transaction numbers does not necessarily indicate a drop in user activity. Payments and trades may continue at similar levels even as the overall count falls because validator votes are no longer included.

Analysts will therefore need to separate user-initiated transactions from validator voting activity when comparing Solana’s network performance before and after the upgrade.