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Solana Validators Open Vote on ‘Alpenglow’ Consensus Overhaul

The proposal retools Solana’s consensus to target near‑instant finality via Votor now, with Rotor planned later.

Overview

  • Voting entered a three‑epoch window starting at Epoch 840, with early turnout low and initial tallies showing only a small share of stake cast so far.
  • Governance rules require at least 33% validator participation for quorum and passage if Yes votes reach two‑thirds of the Yes‑plus‑No total, with Abstain counting toward quorum only.
  • Alpenglow would replace Proof‑of‑History and TowerBFT with a direct‑vote finality engine called Votor that targets roughly 150‑millisecond confirmations.
  • A subsequent Rotor phase is designed to cut inter‑validator data hops to boost network efficiency for high‑throughput use cases such as DeFi and gaming.
  • The design introduces a “20+20” resilience model to keep the chain operating with 20% adversarial validators and another 20% offline, and it proposes a fixed per‑epoch validator fee structure now under discussion.