Solana starts testing upgrade processes through its public test network to reduce transaction finality from 12.8 seconds to approximately 150 milliseconds. This major network transition, centered around the Alpenglow upgrade, aims to achieve a nearly 99% reduction in settlement times for digital assets.
As the token trades near $73 amid broader crypto market weakness, this technical catalyst arrives at a crucial juncture for Solana’s competitive positioning against competing blockchains and traditional payment rails.
By SarmayaNext Corporate & Business Desk • ✓ Fact-Checked • Published September 2026
What Are the Core Changes in the Solana Upgrade?
Solana has initiated public testnet trials for its Alpenglow upgrade, which replaces the TowerBFT consensus mechanism with the Votor protocol. The upgrade aims to slash transaction finality from 12.8 seconds to 150 milliseconds, matching traditional payment network speeds like Visa.
A planned upgrade to make Solana significantly faster has moved to a public testnet, where developers are attempting to cut the time required for a payment to become irreversible from about 13 seconds down to 0.15 seconds. This critical milestone, known as finality, represents the point at which transactions are fully confirmed and irreversible.
Currently, exchanges wait for finality before crediting deposits, bridges wait before releasing funds on alternate blockchains, and merchants rely on it to ensure payments cannot be reversed. Solana currently reaches consensus using a system called TowerBFT, where validators record votes on the blockchain across 32 slots before a block is finalized.
The newly introduced Alpenglow upgrade replaces TowerBFT with a voting protocol called Votor. Under this new protocol, validators send votes directly to one another and settle on a block after one or two rounds, eliminating the lengthy chain of onchain votes that previously slowed down transaction confirmation.
Solana Consensus Protocol Comparison
| Metric / Feature | Current System (TowerBFT) | Upgraded System (Alpenglow / Votor) |
|---|---|---|
| Transaction Finality | 12.8 seconds (~13 seconds) | 150 milliseconds (0.15 seconds) |
| Consensus Mechanism | TowerBFT (onchain voting across 32 slots) | Votor (direct validator voting, 1-2 rounds) |
| Primary Utility Focus | General blockchain settlement & trading | Consumer retail, point-of-sale, instant confirmation |
Solana Alpenglow Upgrade Migration Process
- Deploy the Alpenglow upgrade onto Solana’s public test network using valueless tokens.
- Allow developers to test migration procedures and identify potential network issues.
- Execute network restarts on the testnet as needed without risking user capital.
- Transition validators from TowerBFT to the Votor direct-voting protocol ahead of the mainnet launch.
How the Alpenglow Upgrade Impacts Market Positioning
The upgrade is expected to land in September, reducing finality from 12.8 seconds to approximately 150 milliseconds—a reduction of nearly 99% that developers indicate will make the network feel instantaneous for end users. For broader context, Visa’s payment network processes transactions in roughly the same timeframe, reinforcing Solana’s stated ambition to handle real-world payment volumes at real-world speeds.
Anatoly Yakovenko, widely known as Toly, noted that finality is primarily important at the cash register. He explained that market makers and general trading activity do not wait for finality signals before updating prices, operating instead on the assumption that transactions will clear while managing rare rollbacks accordingly. Consequently, the upgrade carries the greatest practical implications for consumer-facing applications, retail crypto transactions, point-of-sale payments, and any scenario where a human waits for confirmation before exchanging goods or services.
Solana has faced considerable pressure this year alongside broader crypto market weakness, with the token trading near $73. The September upgrade serves as a vital technical catalyst to reinforce its competitive standing. Furthermore, BitFlyer’s recent confirmation of a Solana listing on Japan’s most regulated crypto exchange highlights ongoing regulatory endorsement alongside commercial expansion.
Key Takeaways
- Solana’s testnet has initiated testing for the Alpenglow upgrade to reduce finality from 12.8 seconds to 150 milliseconds.
- The upgrade replaces the TowerBFT consensus system with the Votor protocol, allowing validators to exchange votes directly.
- Anatoly Yakovenko emphasizes that near-instant finality matters most for retail point-of-sale transactions and consumer-facing applications.
- The technical overhaul arrives as Solana trades near $73 amid wider market pressures and seeks to strengthen its real-world payment utility.
The Insider Take
The shift from 12.8 seconds to 150 milliseconds bridges the gap between decentralized ledgers and traditional institutional payment rails like Visa.
By isolating testing to a public testnet using valueless tokens, developers can stress-test Votor without putting real user funds at risk before the official September rollout.
Frequently Asked Questions About Solana starts testing upgrade
What is the latest update on Solana starts testing upgrade?
Solana has moved its Alpenglow upgrade to a public testnet, where developers are testing a new Votor voting protocol designed to cut transaction finality from 12.8 seconds to approximately 150 milliseconds ahead of its planned September launch.
How does the Solana upgrade affect consumer payments and merchants?
The upgrade reduces settlement times by nearly 99%, bringing Solana’s transaction speed in line with traditional payment networks like Visa. This makes the blockchain highly viable for retail point-of-sale transactions and consumer-facing applications where instant confirmation is required.
What are the key technical differences between TowerBFT and Votor?
Solana currently uses TowerBFT, which requires validators to record votes onchain across 32 slots. The new Votor protocol allows validators to send votes directly to one another, settling blocks in one or two rounds and removing long chains of onchain votes.
PS: For educational and informational purposes only. Technology specifications and availability are subject to regional rollout and device compatibility.