#alpenglow

From 12.8 seconds to approximately 150 milliseconds: How Alpenglow is reshaping transaction finality,...

Alpenglow replaces TowerBFT and Proof of History on 21 October 2026. Here is how Votor finalizes in 150 ms, what 20+20 resilience really means, how the one-slot migration works, and the exact list of things that change for RPC, gRPC, and shred consum

Alpenglow rewrites validator income: votes are no longer transactions, rewards split 50/50 with the leader, and you are paid only if certified 8 slots later.

Alpenglow blocks will carry the producer’s client string and a nanosecond clock. Until that gate activates, gossip’s client IDs measure client share.

Every threshold and timer in Solana’s Alpenglow consensus, from the validator source: what “final” will mean, how fast it arrives, and what changes for you.

Under Alpenglow only 2,000 validators vote, ties at the cut-off are evicted, and every seat burns 1.6 SOL an epoch. The exact rules, from the validator source.

Anatoly Yakovenko points to Alpenglow's deployment as evidence that Solana's approach to maximal extractable value is functioning as intended.