Solana is approaching a pivotal moment in its evolution as it prepares for one of the most significant network upgrades. After a long period recognized for its speed and low fees, the network has also been criticized regarding its stability, validator performance and long-term scalability. This upcoming upgrade aims to directly address concerns that could redefine SOL’s role in the blockchain ecosystem.
Significant large-scale performance improvements for Solana
Solana is preparing for one of its most significant upgrades with Alpenglow, a consensus overhaul that replaces both Tower BFT and Proof of History (PoH) to achieve sub-second finality. In an X jobDelphi Digital revealed that the upgrade will introduce two protocol components.
At the heart of this upgrade is Votor, which would replace Tower BFT’s progressive voting rounds with a lightweight vote aggregation model. Validators can aggregate votes off-chain before committing finality, allowing the block to be finalized in one or two confirmation rounds rather than multiple chained rounds. Therefore, the theoretical purpose would be drop down to the 100-150 millisecond range, which is about a 100-fold reduction from its original 12.8 seconds.
Additionally, Votor would achieve this through two simultaneous finalization paths: Rapid finalization triggers when a proposed block achieves 80% or more of total participation approval in the first round and finalizes instantly. Then, slow finalization would come into play when the first round hits 60-80%, requiring a second round to get past 60% before the block is finalized. Both pathways operate in parallel and will ensure that the purpose is achieved even with partial participation in the network.
The other core of this upgrade is Rotor, which has been redesigned to rework the SOL block propagation layer. Meanwhile, the original Turbine gossip network relied on variable latency multihop relays. Rotor will introduce stakes-weighted relay paths that would prioritize bandwidth-efficient propagation, meaning high-stakes validators with reliable bandwidth will become the key relay points.
In simulation, block propagation can occur in as little as 18 milliseconds under typical bandwidth conditions. This upgrade is expected to roll out gradually, with initial activation planned for early this month. mid-2026.
How Solana Emerges as a Leading On-Chain Trading Platform
Kobeissi’s Letter reported that Solana’s on-chain spot volume reached $1.6 trillion in 2025, officially surpassing all off-chain exchanges except Binance. According to data from Jupiter Exchange, on-chain SOL volumes have increased from 1% of total volume to 12% since 2022.
In 2025, GROUND has officially surpassed Bybit, Coinbase Global, and Bitget in terms of total trading volume. Meanwhile, Binance stock has fallen from 80% to 55% since 2022. This shows that crypto activity is rapidly evolving on-chain.
Featured image from iStock, chart from Tradingview.com
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