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How Does the Block Time of a PoW Chain Affect Its Transaction Speed?

The block time is the average time it takes for the network to generate a new block. A longer block time, such as Bitcoin's 10 minutes, means that transactions must wait longer to be included in a block and receive their initial confirmation, directly limiting the overall transaction speed and throughput of the network.

How Does a Mempool Relate to the Speed of a Transaction Confirmation?
What Is ‘Transaction Throughput’ and How Does It Relate to Mempool Clearing Rate?
What Is the Difference between a Zero-Confirmation and a One-Confirmation Transaction?
How Can a User Bypass Censorship?