Quote from: Bitcoin Smith on September 26, 2023, 11:02:52 PM

Yes, it's the time that the TX received its first confirmation.

A transaction is valid when it is confirmed by miners, validate by nodes and a first confirmation is most important.

As a receiver of a bitcoin transaction, you must wait for a first confirmation because accept that transaction as a payment for your trade with another trade partner. If you are more careful, you can wait for 3 confirmations.

Exchanges usually wait for 1 to 3 confirmations to accept a deposit and allow you to use it for trading and withdrawal.

Confirmation
Transaction