Solana schedules Alpenglow consensus upgrade for October 21 mainnet activation, targeting 150ms finality versus the current 12.8 seconds

Alpenglow combines consensus research with erasure-coded data distribution, moving votes off-chain to free capacity for user transactions. Its Votor mechanism runs two voting tracks concurrently: one finalizes in a single round at 80% stake response, the other at 60% after two rounds, with the first to finalize winning. The protocol tolerates up to 40% of stake going offline. Migration follows the same four-step sequence on each cluster, with mainnet-beta migration announced after an observation period confirms earlier runs.

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