How do Bitcoin transactions work?
A Bitcoin transaction is an instruction, signed by your private key, that moves an amount from your address to another. It is broadcast to the network, checked, and then recorded permanently once included in a block.
Step by step
- You enter the recipient's address and an amount in your wallet.
- Your wallet signs the transaction with your private key — proving it's authorized without revealing the key.
- The signed transaction is broadcast to the network and waits in the queue.
- It gets included in a block; each following block is another confirmation.
- After enough confirmations, it is treated as final.
Addresses and verification
The receiving address is a long string of characters. Because a single wrong character sends funds to the wrong place — likely forever — verifying the address (often by checking the first and last characters) is a core habit.
Most avoidable losses happen during a transaction: wrong address, wrong network, or assuming a payment is instant. Understanding the flow is what prevents them.
Sending Bitcoin is like mailing a sealed package with a tracking number. Once it's accepted into the system it moves toward delivery, and you can watch its confirmations — but you can't reach in and pull it back.
- Transactions are generally irreversible once confirmed.
- Sending to a wrong or mistyped address usually means permanent loss.
- A transaction with too low a fee can stay pending for a long time.
Rehearse a send in the Wallet Simulator
Related questions
Last reviewed 2026-06-25. This topic can change over time; always confirm current specifics from primary sources.