Solana’s Alpenglow Upgrade Reaches October 21…
By Karthik Subramanian
AI summary of the source article
Solana scheduled its Alpenglow consensus upgrade for epoch 1064, replacing TowerBFT with Votor to target a 150-millisecond transaction finality. The transition requires validators representing 82% of stake to produce a genesis certificate before handover.
Why it matters
For Solana, successful activation would represent its most significant consensus overhaul since launch.
Key facts
- Alpenglow targets reducing finality from approximately 12.8 seconds to 150 milliseconds by replacing TowerBFT with Votor.
- The migration specification requires validators representing 82% of stake to produce a genesis certificate before Alpenglow takes control.
- The upgrade introduces a Validator Admission Ticket costing 0.8 SOL per epoch instead of individual on-chain vote transaction fees.
Source excerpt · FinanceFeeds
Solana is scheduled to activate its Alpenglow consensus upgrade on October 21, 2026, replacing the blockchain's existing TowerBFT voting mechanism with a system designed to finalize transactions in approximately 150 milliseconds. The upgrade begins during epoch 1064, with the decisive consensus handover scheduled for slot 459,653,000, according to Solana infrastructure developer Anza. Alpenglow ta…