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Sub-Second Transaction Finality

Definition

Sub-second transaction finality means that a transaction on a blockchain is confirmed and irreversible in less than one second. This characteristic signifies extremely rapid settlement, where once a transaction is processed, its validity is guaranteed across the network within a fraction of a second. Achieving such speed is critical for real-time applications, such as high-frequency trading, instant payments, and interactive decentralized applications. It significantly enhances the user experience by eliminating prolonged waiting periods for transaction confirmations.