What is a confirmation?

A confirmation occurs when your transaction is included in a block on the blockchain.

How many confirmations are typically considered very secure?

Six confirmations are considered very secure for most transactions, taking about 1 hour.

Each confirmation makes it exponentially more difficult and expensive to reverse the transaction.

Small, low-risk purchases often accept 0-1 confirmations since the risk of double-spending is minimal.

Confirmations protect against double-spending - attempting to spend the same Bitcoin twice.

6 min readinteractiveIncludes quiz · 5 questions

When you send Bitcoin, you'll hear about "confirmations." Let's understand what they are and why they matter for security.

A confirmation happens when your transaction is included in a block. More confirmations = more security.

Confirmation Timeline:

How Many Confirmations Do You Need?

Exchanges often require 3-6 confirmations before crediting your account.

Double-Spend Protection:

Confirmations protect against someone trying to spend the same Bitcoin twice. With each confirmation, this becomes practically impossible.

This lesson includes a 5-question quiz (passing score: 75%).

Quiz functionality available in the mobile app.