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Following
SOL Solana will implement the new consensus system “Alpenglow” on October 21st.
Solana (SOL) plans to switch to the new consensus system called “Alpenglow” on October 21st. This upgrade aims to significantly reduce the transaction confirmation time from the current approximately 12.8 seconds to just over 150 milliseconds.
Key points:
- Activation time: Alpenglow will be activated during the 1064th epoch, with the expected start time being around 3:00 PM UTC on October 21st.
- Changes to the verification mechanism: Verifiers will no longer publish voting data on the chain, which may lead to a significant decrease in the total volume of transactions reported.
- Finality target: A 150-millisecond finality time is an expected goal, but the actual performance remains to be seen.
Alpenglow upgrade schedule:
The Solana Foundation has released a updated schedule, confirming that the switch will occur during the 1064th epoch, with the expected start time being around 3:00 PM UTC on October 21st. This upgrade will replace the Tower BFT voting system that has been used since the network’s launch in 2020. Since the start time of each epoch may vary, it is recommended that verifiers pay close attention to the status of each epoch rather than relying solely on the clock time.
构建Agave验证者客户端的开发者Anza于10月13日表示，这项变更标志着“为期18个月的迁移工作将在一个槽位（slot）内完成”。值得注意的是，旧系统将在新系统激活后的前5,000个槽位（约18分钟）内继续并行运行，以确保平稳过渡。
在当前架构下，验证者的投票行为被记录为区块链上的交易。而在Alpenglow机制下，验证者将直接交换投票信息，并将足够的批准信号打包成证书，从而在一到两轮投票后快速确定区块的最终性。
操作要求：运营商必须运行基于Agave 4.3.0版本的软件，并预留0.8 SOL作为新的每个纪元准入费用。此外，使用Firedancer和Frankendancer客户端的用户需暂时切换至兼容客户端。
为何交易最终性至关重要
“最终性”是指一笔支付不可逆转的关键节点。虽然索拉纳的交易在视觉上几乎瞬间即可完成，但对于等待更严格保障的商家或跨链桥接服务而言，更快的最终性意味着可以更早地执行后续操作。尽管如此，基金会也谨慎指出，“150毫秒仅为预期值，并非恒定不变的数据。”
Recent data shows that transactions related to voting account for approximately 63% of all statistical transaction volumes. The foundation emphasizes that since these voting data no longer appear as independent transactions in the blocks, this represents a change in accounting statistics, rather than a real loss in network throughput.
SOL price pressure and market outlook
Over the past week, the SOL price fell by about 9.3%, reaching around $107, below its 20-day simple moving average. This trend was influenced by the seven consecutive days of capital outflows from the US spot Solana ETF. Analyst Crypto Patel pointed out on an eight-hour chart that the range of $96 to $103 could be a potential buying area. If the reversal pattern is confirmed, the upper target prices would be $125 and $150 respectively.
Project background review
Anza announced the Alpenglow upgrade in May 2025, and it was approved by validators with a support rate of about 98% in September of the same year. The development team hoped to deploy the mainnet during the first quarter, but after five months of repeated tests in the community cluster, the upgrade finally went live on the Solana testnet on September 24th, and the next day it was deployed in the development network environment.
