Instant economic finality refers to the state where a transaction on a blockchain is considered irreversible and economically secure almost immediately after its inclusion in a block. This means the cost or effort required to reverse the transaction would far exceed any potential gain. It combines cryptographic finality with economic incentives to ensure prompt and secure settlement. This level of finality is crucial for time-sensitive applications.
Context
The achievement of instant economic finality is a highly sought-after characteristic in blockchain design, especially for payment systems and decentralized exchanges. News reports often emphasize protocols that claim to offer this feature, highlighting its benefits for user confidence and market liquidity. Debates around this concept often involve evaluating the economic guarantees provided by different consensus mechanisms.
New single-vote total order broadcast constructions overcome the 15-minute finality delay, establishing instantaneous economic security for the rollup ecosystem.
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