What is block time in blockchain?
The amount of time required to add a block to the canonical chain might
vary significantly depending on how a certain blockchain protocol created.
A blockchain has a linear structure since each new block cannot be undone and happens after the one that came before it.
The linearity of a blockchain makes it the optimal mechanism for validation.
As of July 2019, new blocks uploaded to the Ethereum blockchain once every 14 seconds,
according to ethstats. Io.