alpenglow

Delphi Digital posted on platform X that Solana is preparing for a major upgrade called Alpenglow. This upgrade is a complete overhaul of the consensus mechanism, aiming to achieve sub-second finality by replacing Tower BFT and Proof of History (PoH).Alpenglow introduces two new protocol components: Votor and Rotor. Votor replaces the incremental voting rounds of Tower BFT with a lightweight voting aggregation model. Validators can aggregate votes off-chain before submitting the final confirmation, allowing blocks to achieve finality within 1 to 2 confirmation rounds. This improvement reduces the theoretical finality delay to 100 to 150 milliseconds, shortening it by about 100 times from the original 12.8 seconds.Votor achieves finality through two parallel paths: when a proposed block receives over 80% of the total staked weight in the first round, it triggers fast confirmation and takes effect immediately; if the support rate is between 60% and 80% in the first round, it triggers slow confirmation, requiring a second round of voting to exceed 60% for final confirmation.Rotor reconfigures Solana's block propagation layer. The original Turbine propagation network relied on multi-hop relays with variable delays, while Rotor introduces a staked-weight relay path that prioritizes bandwidth efficiency. Validators with high stakes and reliable bandwidth will become core relay points. Simulation data shows that under typical bandwidth conditions, block propagation can be completed in as fast as 18 milliseconds. This upgrade is expected to be rolled out gradually, with an initial launch timeframe anticipated between early to mid-2026.

ChainCatcher news, according to CoinDesk, Marinade Labs CEO Michael Repetny stated that the Solana ecosystem is preparing for an upgrade by the end of this year or early 2026, with future plans to lower the validator entry threshold after the Alpenglow upgrade, while increasing bandwidth and reducing latency.

ChainCatcher news, the Solana new consensus protocol Alpenglow proposal SIMD-0326 has been voted through. The voting rule requires that the proportion of affirmative votes must reach 2/3 of the total votes (affirmative + negative) to pass.Alpenglow aims to reduce the block finalization time from 12.8 s to nearly 150 ms.

ChainCatcher news, Solana's new consensus protocol Alpenglow proposal SIMD-0326 has entered the community governance phase. Alpenglow aims to reduce the block finalization time from 12.8s to nearly 150ms. The proposal will enter the voting phase during Epochs 840~420 (currently at 834, with one Epoch being approximately 2 days). The voting rule is that the proportion of affirmative votes must reach 2/3 of the total votes (affirmative + negative) to pass.