What Is a Transaction Confirmation and How Does It Relate to Double-Spending?

A transaction confirmation is an indication that a transaction has been successfully added to the blockchain. Each new block added to the chain after a transaction's block is considered a confirmation.

The more confirmations a transaction has, the more secure it is and the less likely it is to be reversed. This is because reversing a transaction would require an attacker to create a longer chain of blocks, which becomes increasingly difficult with each new block.

A higher number of confirmations reduces the risk of double-spending.