To send bitcoin to someone select Send/Request and then select “Send”.
- Inject the destination address (e.g 1AhN6rPdrMuKBGFDKR1k9A8SCLYaNgXhty for MultiBit donations)
- Come in a value (e.g. 5mB or 0.005 BTC) in the BTC box. Make sure you know which units you are using.
- You can inject an amount denominated in whatever bitcoin unit you have chosen in the left entry field or the amount in your chosen fiat currency in the right entry field. MultiBit HD will perform a currency conversion using your choice of exchange.
- The amount that is sent will always be the amount of bitcoin in the BTC box. If you want to send this amount of bitcoin, select “Next”. MultiBit will then demonstrate a confirmation screen requiring you to inject your wallet password and providing you the chance to back out. If you proceed then your transaction will be submitted to the Bitcoin network and should be considered irreversible.
- If you do want to proceed then:
- Come in a note (e.g. “My donation to MultiBit”) to help you keep track of who you’re spending your bitcoin on.
- Come in your wallet password, and select “Send”.
The Bitcoin network requires you to specify the destination address. Any of the following will work:
- Type in the name, or part of a name, of one of your Contacts. Select the contact.
- Type in the destination address directly.
- Copy the destination address to the system clipboard and then click on the Paste button next to the address field to paste it in.
When you press the Send button MultiBit HD shows you the progress of the send as goes after:
- You are told whether the Bitcoin transaction was constructed successfully (for example, you may not have enough bitcoin in your wallet)
- The progress of the transaction being sent to the Bitcoin network. The broadcast icon fills up as the transaction send progresses
Sometimes your transaction does not broadcast cleanly to the Bitcoin network. When this happens you are shown a messages like “Your spendable balance is lower” . If this happens and you are in a hurry you can close down MultiBit HD, check your network connection and restart MultiBit HD. It will then rebroadcast any transactions that have not confirmed. Otherwise, simply leave it running and wait for the next duo of blocks (say thirty minutes) for the transaction to get confirmed normally. Your balance will update automatically.
Some people have reported transactions taking fairly a long time to confirm under these conditions – even up to twenty four hours later.
Replace-by-fee (RBF) transactions
A switch to Bitcoin Core in version 0.12+ involves replace-by-fee transaction support. RBF is an optional extension to a standard Bitcoin transaction that permits the sender to perform a repeat broadcast of an earlier failed transaction with a higher fee fastened. Typically this is to “free up” an earlier transaction that has been accepted into the network as valid but because the fee is too low is being overlooked by miners. Repeating the transaction with a higher fee permits the sender to override the earlier transaction in the hope that the miners will add it to a block.
MultiBit HD does not presently support the creation of these types of transactions and relies instead on setting an adequate fee to the transaction to ensure timely inclusion.