A confirmation means a blockchain transaction has been included in a block and has gained network validation over time.
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Short definition
Confirmation is a confirmation means a blockchain transaction has been included in a block and has gained network validation over time.
Simple explanation
After a transaction is included in a block, later blocks can make it more final depending on the network's design.
Why it matters
Confirmations help users understand whether a transaction is pending, successful, failed, or still waiting for stronger finality.
Example context
An exchange may wait for several confirmations before crediting a deposit.