Solana’s “Alpenglow” Upgrade Could Redefine Blockchain Finality ⚡
Solana is preparing a major protocol overhaul called Alpenglow, and it’s not a routine update — it’s a full rethink of how consensus and block propagation work, with the goal of sub-second finality.
What’s changing?
Alpenglow plans to replace both Tower BFT and Proof of History, introducing two new core components:
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🔹 Votor — Faster, Smarter Consensus
Replaces multi-round voting with lightweight vote aggregation
Validators aggregate votes off-chain before final submission
**Finality drops from ~12.8 seconds to ~
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