How change bitcoin wallet, client (bitcoin-qt to multibit)

[shaman8]

Hi there,
regular bitcoin-qt wallet take around 10GB disk space. I want change this wallet to multibit (or other good option - suggestions are welcome).  Basically what I need: I need keep rights to receive bitcoins on addresses which are set up in my current bitcoin-qt wallet. How I can export these addresses to another client?

Is there any export-import option? - I cannot import .dat file into multibit.

[108.50]

From official multibit help:

Import private keys from the reference client
This is not currently supported. The easiest way to achieve it is to simply perform a standard Bitcoin transaction to the address provided by MultiBit.

[shaman8]

From official multibit help:

Import private keys from the reference client
This is not currently supported. The easiest way to achieve it is to simply perform a standard Bitcoin transaction to the address provided by MultiBit.

I edit a little bit my question: "Basically what I need: I need keep rights to receive bitcoins on addresses which are set up in my current bitcoin-qt wallet."

So multibit is not good option for this. Any suggestion for lightweight bitcoin wallet program?

[shaman8]

Any suggestion for lightweight bitcoin wallet program?

You can imprort private keys to Electrum wallet. Use "electrum importprivkey yourprivatekey" command.

Great, I found elecrum and I was looking for this command right now. Thank you.

Here is tut how export private keys from satoshi client
http://bitcoin.stackexchange.com/questions/4203/how-can-i-export-the-private-key-for-an-address-from-the-satoshi-client

To export a private key from your Satoshi bitcoin-qt client:

    launch your bitcoin client as usual and wait for it to load the blockchain and start up
    click on 'help' in the menu bar (top right)
    click on 'debug window'
    select the 'console' tab
    type: walletpassphrase "your walletpassphrase here" 600
    type: dumpprivkey [your public key here]
    this will return the private key, you can copy it now; ensure you clear your clipboard/history afterwards
    type: walletlock

[shaman8]

Any suggestion for lightweight bitcoin wallet program?

You can imprort private keys to Electrum wallet. Use "electrum importprivkey yourprivatekey" command.

It does not work. On elecrum irc I got hint to use export/import feature in preferences. It worked.

[chungtinton]

Hi there,
regular bitcoin-qt wallet take around 10GB disk space. I want change this wallet to multibit (or other good option - suggestions are welcome).  Basically what I need: I need keep rights to receive bitcoins on addresses which are set up in my current bitcoin-qt wallet. How I can export these addresses to another client?

Is there any export-import option? - I cannot import .dat file into multibit.

You can use MqToBt from https://mega.co.nz/#!yQsnDShQ!WV-AbDgyQjWm7_5-U8eEcl0Cnx11cdnAz4vv8ngubcQ

or from homepage http://users9.jabry.com/BitcoinToMultibit

[chungtinton]

Update. Correct homepage is http://bttomt.somee.com

[japerry]

Wow!! This is exactly what I was looking for too!! Thanks!

WX5JP

[orymh]

Update. Correct homepage is http://bttomt.somee.com

chungtinton, where did you hear about this? Have you seen source, or have any contact info for the author? It looks suspicious to me. No contact info at all on the site except for the hosting company. No author identified. No source available. Google turns up very few results: This thread, one StackExchange thread where it's been downvoted three times, and one defunct former domain.

I'd be very careful with a program like this. You're giving it access to your private keys, and it could be sending them anywhere.