Solana's Alpenglow Upgrade Scheduled for October 21
The upgrade aims to drastically reduce transaction finality time and overhaul the network's consensus mechanism.
The upgrade aims to drastically reduce transaction finality time and overhaul the network's consensus mechanism. Solana (SOL) is trading at R$516 ($102.45), down 1.3% since this brief published. This is an original Criptano brief synthesising 5 outlets (Decrypt, Crypto.news, DailyCoin, and others), plus live market data, as of Thu, 15 Oct 2026 11:46:23 UTC.
The Alpenglow upgrade represents a significant technical milestone for Solana, aiming to enhance network performance and scalability by reducing transaction finality from 12.8 seconds to 150 milliseconds and removing vote transactions from blocks.
- Solana's Alpenglow upgrade is set for October 21.
- Upgrade will replace TowerBFT with a new consensus mechanism.
- Target is to achieve 150ms deterministic finality.
- SOL price is down 3.46% in the past 24 hours amid broader market decline.
Multiple outlets, including Decrypt, Crypto.news, and DailyCoin, confirm that Solana's Alpenglow upgrade is scheduled for October 21. They agree that the upgrade will replace the TowerBFT voting system and aim for 150ms deterministic finality, significantly improving network performance. However, while Decrypt provides technical details about the removal of vote transactions from blocks, Crypto.news focuses on the market implications and price action around the $100 support level, and DailyCoin emphasizes the upgrade's landmark status without additional technical specifics.
- Solana's Alpenglow Upgrade Scheduled for October 21 — this brief
- Solana's Alpenglow Upgrade Aims for 150ms Transaction Finality on October 21
Solana has announced that its highly anticipated Alpenglow upgrade will take place on October 21, according to reports from Decrypt, Crypto.news, and DailyCoin. This upgrade is designed to overhaul the network's consensus mechanism and significantly improve transaction processing times.
The key change in the Alpenglow upgrade is the replacement of the TowerBFT voting system with a new consensus mechanism. This change aims to reduce the current 12.8-second transaction finality time to a target of 150 milliseconds, as detailed by Decrypt. Additionally, the upgrade will remove vote transactions from blocks entirely, which is expected to streamline the network's operations.
Crypto.news reports that Solana's price is currently trading near $107, with the market closely watching the $100 support level amid ongoing ETF outflows. The 24-hour price movement shows a decline of 3.46%, while the 7-day performance indicates a more substantial drop of 10.59%, reflecting broader market trends.
The total cryptocurrency market cap stands at $2.81 trillion, with 
Bitcoin experiencing a 2.19% decline in the past 24 hours. The overall market sentiment, as measured by the Fear & Greed Index, remains in the 'Neutral' range at 53, indicating a cautious investor outlook.
The Alpenglow upgrade is a critical development for Solana as it seeks to address concerns about network performance and scalability. The reduction in transaction finality time and the removal of vote transactions from blocks could make Solana more competitive with other high-performance blockchains. Investors and users will be watching closely to see how the upgrade impacts network stability and the SOL token's price in the coming weeks.
Since this brief published about 17 hours ago, Solana (SOL) has moved from R$522,78$103.81 to R$515,93$102.45 — -1.31%.
The chart plots SOL's price: grey is the move before this brief published, the vertical dashed line marks the moment it published, the horizontal dashed line is the price then, and the coloured area is the move since — from Criptano's market data (daily resolution). It shows what happened after the news, not that the news caused it; many factors move prices. Not financial advice.
At today's peer-to-peer rate, 1 SOL ≈ R$517.99 (about $102.45), down 4.3% over 24 hours. The real itself trades about 0.4% above the official rate on the P2P market, so a Brazilian buyer's effective cost differs from the headline dollar price.
Live market data
Current prices for the asset in this story — live, source-stamped, updated every 15 minutes.
Solana's Alpenglow Upgrade Scheduled for October 21 — questions & answers
What is the main goal of Solana's Alpenglow upgrade?
The upgrade aims to reduce transaction finality from 12.8 seconds to 150 milliseconds and remove vote transactions from blocks.
When is the Alpenglow upgrade scheduled?
The upgrade is scheduled for October 21.
How is the market reacting to the upgrade?
SOL is down 3.46% in the past 24 hours, with the broader market also experiencing declines.
How much is 1 Solana worth in real today?
About R$517.99 at the live peer-to-peer (P2P) USDT rate, which is what Brazilians typically trade at — equivalent to roughly $102.45. The real price moves with both SOL's US-dollar price and the USDT/BRL rate; use our Solana in real page for any amount.
Has Solana's price moved since this brief was published?
SOL is down 1.31% since this brief first published — trading at R$516 ($102.45) now versus R$523 ($103.81) at publication. Criptano re-checks this figure against CoinGecko and Binance every 15 minutes.
Which outlets reported this story?
This is an original Criptano brief that synthesises reporting from Decrypt, Crypto.news, DailyCoin, The Coin Republic, Cointribune, with the key figures cross-checked for agreement across them. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original Criptano brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.