Single round Finality

Definition ∞ Single round Finality refers to a blockchain consensus mechanism where transactions are considered irreversible and permanently recorded after just one block confirmation. This provides immediate and absolute assurance of transaction completion, without the need for multiple subsequent block confirmations. It significantly reduces the time to finality, improving the speed and efficiency of decentralized applications. This property is highly desirable for payment systems and high-frequency trading.
Context ∞ Single round finality is a key performance metric and a subject of intense development in new blockchain architectures, particularly those aiming for enterprise adoption. Debates often involve the trade-offs between achieving instant finality and maintaining decentralization or security guarantees. Projects are continuously working to deliver this capability without compromising other fundamental blockchain properties.