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Solana's Alpenglow upgrade set for Oct 21 targets 150ms transaction finality and changes validator voting.

Protocol Fundamentals
14 Oct 2026
Coindesk
View Source
Bullish
Solana's Alpenglow upgrade set for Oct 21 targets 150ms transaction finality and changes validator voting.

Solana plans to launch its Alpenglow upgrade on October 21, aiming to achieve transaction finality in about 150 milliseconds by replacing its current validator voting system, TowerBFT. This upgrade moves validator votes off-chain, which may significantly reduce reported transaction counts without affecting actual user activity. Validators must update to Agave 4.3.0 software, and operators using alternative validator software will need to switch temporarily. The upgrade is expected to improve transaction finality speed, benefiting merchants and cross-chain operations by providing quicker irreversible payment confirmations.

Following the announcement of Solana's Alpenglow upgrade set for October 21, SOL trades at Rp1.925.584 on Pluang as of Oct 14, 2026 11:21 WIB. The token's market cap stands at Rp1.137,41 trillion with a 24-hour trading volume of Rp50,39 trillion. Pluang users show a balanced sentiment with 58% buy orders and 42% sell, holding their SOL for an average of 71 days.

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