Zero Block Latency

Definition ∞ Zero Block Latency is a theoretical or aspirational state in blockchain networks where transactions are confirmed instantly, without any delay between the submission of a transaction and its inclusion in a finalized block. This eliminates the waiting period typically associated with block propagation and validation. It represents immediate transaction finality.
Context ∞ Zero block latency is a highly sought-after feature in blockchain design, especially for applications requiring rapid transaction finality, such as high-frequency trading or real-time payments. News often discusses various layer-2 solutions and consensus mechanisms attempting to approach this ideal by minimizing confirmation times. Achieving true zero block latency remains a significant challenge for blockchain engineers.