Overview
Block time is the average time between blocks on a blockchain, set by its consensus difficulty or schedule. It determines transaction confirmation speed. Shorter block times improve responsiveness but can increase orphan risk.
How It Works
In proof of work, difficulty adjusts to keep block time near a target. In proof of stake, the schedule is fixed by slots and epochs. The chosen block time balances confirmation speed with network propagation and security.
Why It Matters
Block time directly affects user experience and the time to finality. It is a key metric for comparing chains. Trade-offs in block time influence security, throughput, and decentralization.
Related Concepts
Block Time relates to Finality, Blocks, and Consensus. It affects transaction confirmation speed across chains.