Alpenglow will replace the voting system Solana has used since 2020, targeting roughly 150-millisecond finality after months of testing that included a failed migration and rollback. Solana’s Alpenglow upgrade is expected to reduce transaction finality to about 150 milliseconds from roughly six seconds by moving validator voting off-chain. Faster finality could make trading and payments feel more like those on centralized exchanges, while validator costs are expected to fall by about 60 percent…
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