importing private key from a blockchain wallet

[toutankhamoun.c]

Hi, its my first topic in this forum and im wondering if someone can help me out.
i a new bitcoin user, so i created a blockchain.info wallet ..and funded it with some btc but when i try to send them it tells that the private key doesnt match the adress. i ve googled to how to import privkey and i tryed different methodes (bitcoind, pywallet) but im still stuck. may be its not the right section but i cant post anywhere else for now

[ivanol]

If these are coins that you sent to a blockchain.info wallet address then you should be able to send them directly using their web interface.

If they are coins you sent to an address that you have the private key for elsewhere then you can import this into blockchain.info through their web interface, and then send the coins on from there.

Some methods of private key import are fussy as to the format of the private key. If so then www.bitaddress.org is a great tool - the Wallet Details tab allows you to enter any format of private key, and does the conversions (all in Javascript on the client side, so you can run it offline in a disconnected computer).

[toutankhamoun.c]

but how can i get my privkey from my blockchain.info my wallet.i dont how to extract the private key.
i only got the backup , the adress, nd the passephrase ..
its a blockchain wallet with coins on it and i tryed to send money but it tels me that the adress doesnt match the private key .. didnt get it ..

[farproc]

if ”it tells that the private key doesnt match the adress“ there should be something wrong with your private key. If this is true, you do not need to export your blockchain.info private key, it is useless. Ask the administrator to check your account.

[primeasic]

you should use pywallet to import it to bitcoind wallet, or even easier is to use electrum client (you can import into that using the Settings menu).
if it tells you wrong address maybe there was a problem with importing / exporting the wallet.

[toutankhamoun.c]

when i try to send the btc it tells me the adress doesnt match the private key.. so how can i fix it ? contact the admin ? how ?

[primeasic]

when i try to send the btc it tells me the adress doesnt match the private key.. so how can i fix it ? contact the admin ? how ?

can you try to send it with the original, blockchain.info client? or this error is in the computer installed bitcoin client?

[toutankhamoun.c]

blockchain client, and ive tryed with mywallet interface and it doesnt work. i didnt even change the interface.it was blockchain from the start ..

[Stephen Gornick]

blockchain client, and ive tryed with mywallet interface and it doesnt work. i didnt even change the interface.it was blockchain from the start ..

In your Blockchain.info/wallet you can click Import/Export then when it presents you the warning, click "I Understand".
Then on the left click Export Unencrypted.  You can then choose Bitcoin-Qt format.

Now just to recap, from what I gathered from your post:

You created a Blockchain.info/wallet and never imported any keys.  You have received coins to an address(es) in the wallet.  But when you attempt to spend those funds received you get an error saying
  "address doesnt match the private key"

If that is accurate then you might want to open a support ticket:
 - https://blockchain.zendesk.com

[toutankhamoun.c]

open a support ticket and ask for what?? .. cause i ve already submit a request on https://blockchain.zendesk.com/.. and what will they do ? i cant fix it myself ?
and for the Bitcoin-Qt methode will it work cause ive got bitcoin-qd an multibit.so importing the my wallet to another one will fix the problem ?

[piuk]

Hi, its my first topic in this forum and im wondering if someone can help me out.
i a new bitcoin user, so i created a blockchain.info wallet ..and funded it with some btc but when i try to send them it tells that the private key doesnt match the adress. i ve googled to how to import privkey and i tryed different methodes (bitcoind, pywallet) but im still stuck. may be its not the right section but i cant post anywhere else for now

Please explain the steps you went through when you signed up for a wallet.

Did you open an account at blockchain.info first? Or did you use another desktop wallet first. Where did you send the coins from into the wallet? Did you add the address as watch only?

[toutankhamoun.c]

Its a blockchain wallet i didnt import it i ve created it in the site. i ve send coins from an exchanger nd and for watch only i didnt do it .. can do it after ive funded the wallet  ? i wont lost the coins if i do that ?

[Stephen Gornick]

Its a blockchain wallet i didnt import it i ve created it in the site. i ve send coins from an exchanger nd and for watch only i didnt do it .. can do it after ive funded the wallet  ? i wont lost the coins if i do that ?

I'm not sure I'm following but let me answer the question I think you are asking.

When you use blockchain.info/wallet, you never need to touch private keys yourself.   When you want to receive money it will give you a bitcoin address to use each time you click "New Address".   That address will have a private key and can be used for spending.

It is possible to make an existing Bitcoin address into a "watching only" address by going into the Advanced mode and then delete the private key.  Or you could simply take any Bitcoin address from anywhere and add it as a watching only address.  

So in working with a "watching only" address you are going above and beyond the basic functionality provided by Blockchain.info/wallet.  With that comes the necessity to understand  when a private key is needed and it appears that is about where your question lies, so it is good that you are asking this question.

When you have a "watching only" address,  you cannot spend any funds received to that address unless you have access to the corresponding private key.

So I am thinking that your question is this:

  If a watching only address is added now, can that address be used to request payment from others even though it says "watching only?"  

The answer to that is yes, as long as you have the private key for it somewhere and that key is kept secure.

The Blockchain.info/wallet can later import private keys.  If you add a private key it will look to see if the address already exists.  If it does and it is a "watching only" Bitcoin address then Blockchain.info/wallet will simply change the mode for that address so that it is no longer a "watching only" address and store the private key with it.  You can then use any funds received to that address for spending.    

So as long as you have a private key for a Bitcoin address you can always spend any funds received to that address.  The private key is only needed at the time you plan to spend funds at that address.  The private key does not necessarily need to be in the Blockchain.info/wallet at the time a payment is received to that "watching only" Bitcoin address.

You can see all the Bicoin address/private key pairs in your Blockchain.info/wallet by clickiing on Import/Export then Paper Wallet.  

For any private key, you can use a tool to have it compute the corresponding Bitcoin address.  BrainWallet.org generator can do this:
 - http://brainwallet.org/#generator  <--  Paste your private key, it will show the Bitcoin address.

So if you are seeing a problem reported with a certain address -- firstly a mismatch between private key and Bitcon address shouldn't happen, but just to know a bit more where your problem lies, perhaps check the private key on BrainWallet and ensure that it does indeed provide a Bitcoin address that matches the one shown on the Paper Wallet view.

[toutankhamoun.c]

Thanks for the explanation, so simply this is the problem i simply created a blockchain my walled. then funded the address that was generated in the creation of the wallet. when the bitcoin were in the wallet i tried to make a transaction later but it did tell me that the private key didn't match the address. i didnt make the address "watch only" i didn't touch the private key.

[Stephen Gornick]

Thanks for the explanation, so simply this is the problem i simply created a blockchain my walled. then funded the address that was generated in the creation of the wallet. when the bitcoin were in the wallet i tried to make a transaction later but it did tell me that the private key didn't match the address. i didnt make the address "watch only" i didn't touch the private key.

Hm, that is very odd.  Maybe it is a bug.  Or maybe some issue with the data.

Blockchain.info support will probably need to have a look at the contents of the wallet to further troubleshoot, unless they know why this is occurring.

So if you wanted to you might try exporting the private keys and importing them in another empty wallet on Blockchain.info.  (So on the one you Import/Export, then export unencrypted.  Then log out and create a second new wallet where you import the private key(s) and try to spend from there.)

[toutankhamoun.c]

So after hours of readings, and after verifying my address and private key i assume that blockchain did generate  for me a wrong private key because i tried to export the wallet but in another blockchain wallet it said sync with the server but i cant see my addresses so i ve tried to use brainwallet to see if the private key checks with the address given but the private key himself is invalid.
i have all the backups of the wallet so tried them with offline brainwallet and the same problem from the creation of the my wallet the private key generated with the address is invalid but dont know why but the statue  of the address generated is not watch only because of the private key is invalid. its the only conclusion i can have. so can anyone help is it possible that this kinda problem happens ? or did i do something wrong ? ..

[Stephen Gornick]

So after hours of readings, and after verifying my address and private key i assume that blockchain did generate  for me a wrong private key because i tried to export the wallet but in another blockchain wallet it said sync with the server but i cant see my addresses so i ve tried to use brainwallet to see if the private key checks with the address given but the private key himself is invalid.
i have all the backups of the wallet so tried them with offline brainwallet and the same problem from the creation of the my wallet the private key generated with the address is invalid but dont know why but the statue  of the address generated is not watch only because of the private key is invalid. its the only conclusion i can have. so can anyone help is it possible that this kinda problem happens ? or did i do something wrong ? ..

I don't know that this situation has ever occurred with anyone else.  It sounds like something you should have piuk take a look at.  (He'll probably need your wallet password, or perhaps you can change it to one that you can share with him.)  Try sending him a PM and ask for this to be investigated.

Summary - piuk
 - http://bitcointalk.org/index.php?action=profile;u=17928

[John (John K.)]

So after hours of readings, and after verifying my address and private key i assume that blockchain did generate  for me a wrong private key because i tried to export the wallet but in another blockchain wallet it said sync with the server but i cant see my addresses so i ve tried to use brainwallet to see if the private key checks with the address given but the private key himself is invalid.
i have all the backups of the wallet so tried them with offline brainwallet and the same problem from the creation of the my wallet the private key generated with the address is invalid but dont know why but the statue  of the address generated is not watch only because of the private key is invalid. its the only conclusion i can have. so can anyone help is it possible that this kinda problem happens ? or did i do something wrong ? ..

I don't know that this situation has ever occurred with anyone else.  It sounds like something you should have piuk take a look at.  (He'll probably need your wallet password, or perhaps you can change it to one that you can share with him.)  Try sending him a PM and ask for this to be investigated.

Summary - piuk
 - http://bitcointalk.org/index.php?action=profile;u=17928

Yes, please PM him. He's the operator of blockchain.info.

[toutankhamoun.c]

Already send him a pm 3 days ago and did send a support request too. still waiting for an answer.

[Stephen Gornick]

Already send him a pm 3 days ago and did send a support request too. still waiting for an answer.

Is this resolved?

Here's possibly what was happening:

This error should be fixed now.

introduced here: https://github.com/blockchain/My-Wallet/commit/9acdb2429bf70e60dc910624ebed9b03c8cebd7c