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What Is Solana Alpenglow? Developer Anza Proposes 'Largest' Consensus Change to SOL Network

  • Solana Labs' spinout Anza introduced the Alpenglow consensus protocol on May 19 to upgrade the Solana blockchain's core architecture.
  • The upgrade plans to replace Solana’s current timestamping and consensus mechanisms with the new Alpenglow protocol, aiming to improve transaction speeds and lower fees.
  • Alpenglow includes Votor for block finalization and Rotor to accelerate data relay, targeting transaction finality between 100 and 150 milliseconds.
  • Anza claims this change is the "biggest change to Solana's core protocol" and expects a 100-fold latency improvement over current performance.
  • If successful, the upgrade could enable real-time applications and strengthen Solana's position as a leading blockchain despite not fully preventing outages.
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The Defiant broke the news in on Monday, May 19, 2025.
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