Solana developers are pushing a major consensus overhaul with the Alpenglow proposal, now in the validator voting stage.

Just over 10% of validators have backed the upgrade as of European morning hours on Thursday, a tracker shows, with over 88% of eligible participants yet to cast their choice.

If passed, it would replace Proof-of-History and TowerBFT with a faster, more resilient design centered on two new components: Votor and Rotor.

Proof of history is Solana’s existing consensus mechanism. It timestamps transactions, allowing validators to determine the correct order without wasting time on syncing (which creates a slower network). TowerBFT is the network’s voting system. Validators use previous votes as a guide, helping them quickly agree on the next block while resisting attacks.

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