In cryptocurrency, confirmations play a crucial role in identifying whether the transaction was secure or not. Simply put, confirmation is a way to verify the legitimacy of the transaction. For instance, if a transaction is not legitimate, then the blockchain would deny it.
The confirmations depend on the number of transactions. For enormous exchanges, over ten affirmations can be required. However, each blockchain has a different number of suggested confirmations. A single confirmation can take about 10 minutes. This is practiced to reduce blockchain rearrangement vectors and maintain the authenticity of the blockchain.