Block Proposal Delay

Definition ∞ Block proposal delay is the interval between when a blockchain block could be proposed by an assigned validator and when it is actually broadcast to the network. This delay can occur due to factors such as network congestion, validator misbehavior, or technical issues. Significant block proposal delays reduce network throughput and increase transaction confirmation times. They directly impact the efficiency and user experience of a blockchain.
Context ∞ Block proposal delay is a key metric for assessing the performance and health of a proof-of-stake blockchain. News reports often highlight instances of increased delay, particularly during periods of high network activity or validator instability. Protocol upgrades frequently target reductions in this delay to enhance scalability.