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20.3% of Solana validators unprepared for major Alpenglow upgrade launching Oct 21

Protocol Fundamentals
20 Oct 2026
Crypto Briefing
View Source
Neutral
20.3% of Solana validators unprepared for major Alpenglow upgrade launching Oct 21

Solana is set to launch its major consensus upgrade, Alpenglow, on October 21, 2026, which will significantly speed up transaction finality. However, a readiness snapshot revealed that 151 validators, holding 20.3% of the network's stake, are not meeting the new requirements such as running updated software, registering BLS keys, and maintaining a minimum SOL balance. Validators failing to comply risk losing voting rights, potentially impacting stakers who delegate to them. The upgrade replaces the old voting system with a faster, aggregated signature method and caps active validators at 2,000 by stake weight, with further improvements planned in later phases.

Solana validators holding 20.3% of the network's stake were flagged as unprepared before the Alpenglow upgrade. For readers following the broader cryptocurrency market, here is Pluang's market snapshot as of Oct 20, 2026 17:31 WIB: out of 50 major cryptocurrencies tradable on Pluang, 16 rose and 32 fell today. Notable movers include UNI at Rp128.443 with a 1-day change of -3.05% and Pluang order activity showing 34% Sell / 66% Buy, CRV at Rp6.526 with +3.03% change and 99% Sell / 1% Buy activity, and SAND at Rp1.017 with -3.00% change and 44% Sell / 56% Buy activity.

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