Solana targets faster finality, while Wall Street cuts the cash that must move

Solana activated Alpenglow on mainnet on Oct. 21 at slot 459,653,000, replacing TowerBFT with a consensus design that targets about 150 milliseconds to finality. Under the new protocol, confirmed and finalized become the same state. At the National Securities Clearing Corporation (NSCC), multilateral netting cuts the value of equities payment obligations by an average of 98%. Alpenglow shortens the time until a transaction becomes irreversible, and netting reduces the amount of money participants must move to complete trades. The first phase of Solana’s Alpenglow upgrade, Votor, has validators exchange votes directly and aggregate them into certificates, which allows finalization in one or two voting rounds. Transaction execution, the Solana Virtual Machine , and fee mechanics stay as they were.

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