Solana Could Soon Witness Its Largest Consensus Change as Developer Proposes 'Alpenglow'

Solana developers are planning what could be the blockchain’s most ambitious core upgrade to date — one that replaces its current technology stack with a redesigned consensus protocol built for near-instant finality and responsiveness.The new system, called Alpenglow, was unveiled on Monday by infrastructure firm Anza, a Solana Labs spinout. It proposes replacing Proof of History — Solana’s famously unique “pre-recorded clock” system — and Tower BFT, its existing voting mechanism for reaching consensus.BFT, or Byzantine Fault Tolerance, is a way for a group of network nodes to agree on a piece of information even if some were lying or broken source: https://www.coindesk.com/tech/2025/05/21/solana-could-soon-witness-its-largest-consensus-change-as-developer-proposes-alpenglow