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Solana Alpenglow Testnet: What Does the 150ms Finality Upgrade Change?
Validators can now test a redesign that Anza says could cut finality from 13 seconds to 150 milliseconds.
- Solana moved the Alpenglow consensus upgrade to public testnet, targeting a reduction in transaction finality from roughly 13 seconds to 0.15 seconds. Developers can now test the new Votor voting protocol on a live network copy without risking real funds.
- Alpenglow replaces the current TowerBFT consensus mechanism with Votor, allowing validators to exchange votes directly. The upgrade has undergone more than four months of trials on a dedicated community cluster before moving to this broader public environment.
- Validators participating in the test must run Agave 4.3, the latest software maintained by Anza. Anza recommended this version for mainnet adoption on Sept. 21 after rolling it out to operators responsible for 25% of the network's stake.
- Mainnet activation remains tentatively penciled in for around September 28, though Anza's feature-gate tracker still lists the testnet switch as pending. Applications will continue executing transactions as usual, with changes focused on validator communication protocols.
- Solana ETF demand remains firm, with $26.1M in net inflows on Sept. 21, lifting cumulative flows to $1.44B. Analysts view the upcoming Alpenglow activation as a potential catalyst for SOL price action as the token grinds against resistance.
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Solana Alpenglow testnet: What does the 150ms finality upgrade change?
Solana has moved its Alpenglow consensus upgrade toward public testnet deployment as developers prepare to test a design intended to cut transaction finality from roughly 13 seconds to around 150 milliseconds. According to github, the testnet stage will let developers…
Anza has brought Solana's Alpenglow update to the public testnet; TowerBFT is being replaced by Votor, finality is reduced from 12.8 seconds to ~150ms, mainnet launch is September 28.
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