Solana mainnet undergoes Alpenglow upgrade today, transitioning to new consensus architecture with near-instantaneous block validation.

Tech & Launches · 2026-10-21

Solana's mainnet transitioned to a new consensus framework called Alpenglow on 14:50 UTC today, marking the protocol's most significant core update. The upgrade replaces the existing consensus mechanism with architecture intended to minimize transaction settlement time and boost network responsiveness through near-instantaneous block validation.

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