The wallet.dat is the file that allows you to spend money from your Bitcoin account. It is the place where your "private keys" for a corresponding "address" is stored.

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How do I switch from Bitcoin-QT to a lighter, faster (SPV) Bitcoin client?

So, keeping up to date with the blockchain is getting ridiculous in Bitcoin-QT, especially on my laptop. If I leave it off or away from the internet for even a short period of time, it takes forever ...
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1answer
82 views

How to remove private keys from wallet.dat and create “receive only” wallet?

I want to create a wallet for monitoring incoming transactions. So it should be receive only wallet that will be place on hosting, that is potentially not secure. If I understand it well, this won't ...
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Public Key + Private Key enough to backup?

I invested in bitcoins and unfortunately I have problems to understand the system. Perhaps you can answer me the following questions? 1.a) I know my public and my private key. Do I still have to ...
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2answers
148 views

How to move an address to a new wallet?

I have a wallet with several addresses. I would like to isolate one of the addresses in its own wallet, but I don't know how to do it. I've been trying with pywallet.py, but I've been unable to do it. ...
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When do I have to backup wallet.dat?

Is it obligatory to backup wallet.dat after each outgoing transfer? I understand it is, but not after each incoming transfer.
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Importing a backed-up encrypted wallet.dat

I have bitcoin-qt-0.8.1-beta installed on a computer. I also have another computer in which I'd like to share the same wallet. First, for backup purposes, I have exported the wallet into a backup ...
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718 views

Dumping private keys from wallet.dat from command line (pywallet.py alternatives)

I have somewhere in my hard disks some copies of old wallets which I need to analyse. My idea was importing them into blockchain.info, but to do that apparently you need to dump them with ...
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1answer
260 views

What files do I need for backing up my wallet? [duplicate]

Is %APPDATA%\Roaming\Bitcoin\wallet.dat the only file I need to backup my wallet? I've heard about backing up every ~50-100 transactions is this correct? I thought that with the wallet.dat file, I ...
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271 views

technical question: receiving wallet.dat error

I have ~5 BTC on an old laptop (Windows 7) and I tried moving the balance to another client. At first I tried moving about 0.1 BTC just to see what would happen. The client debitted the balance but it ...
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1answer
120 views

How can I programmatically use several different (isolated) wallets?

I want to use several different wallets (as if one wallet = one account), and want to make sure the spending and receiving activities are exclusive to one wallet at a time. How can I interface with ...
4
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2answers
260 views

How can I generate wallet files for multibit or armory?

I'm considering working on a bitcoin project that will need to generate wallet files. I'm not looking to create receipt addresses that a customer can send funds to for an existing wallet. Instead, I ...
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2answers
637 views

I sent bitcoins to my wallet before it had synced. is there ANY way i can get my coins back?

I downloaded Bitcoin. qt and started the sync (which was going to take about 6 days UGH) so about 4 days into it i tried to open the app and Now the app shows "error loading blkindex.dat" So i cannot ...
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What if the system crashes if I have made transactions after my backup?

Suppose I have a recent backup of my wallet.dat file. Now I make (say) two transactions: one receipt and one send. Before I run my next backup, the hard drive crashes and I lose wallet.dat. I can ...
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327 views

How to hide a million dollar on your hard drive in a Bitcoin-Qt wallet.dat file that it can't be associated with you? [closed]

I think the best way is hiding in plain sight, by that I mean you don't need any special stuff, like a paper wallet in safe-deposit box, just a normal wallet.dat file with basic precautions used as if ...
2
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1answer
87 views

Should a JSON-RPC user be required to use a password when backing up the wallet?

I was surprised I was able to back up my wallet over JSON RPC without requiring the wallet password (or even without a secondary backup-only password) I'm concerned that this could create a DOS ...
4
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1answer
116 views

What is the benefit of upgrading the wallet file?

bitcoind -help displays -upgradewallet Upgrade wallet to latest format I have noticed that my wallet format is a few behind bitcoind's version number. Does this mean it is an old format? ...
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2answers
732 views

How can I delete an address (private key) in the list of received Bitcoins?

For every transaction I wanted to get, I was creating a new address, but soon I realized that there is just no way to delete all these addresses from the UI. To make it clear, here is a picture: I ...
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3answers
561 views

Is there a limit to how long a wallet can be offline?

I have a wallet file I backed up June 2011, and has been offline for over a year now. When I copied it back into where the files are stored with the official client, it says my balance is 0, with no ...
4
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Does Mt. Gox's “Redeem a wallet.dat” feature require an unencrypted wallet?

Just added to Mt. Gox's API documentation is the ability to Redeem a wallet.dat, which allows a simple way to import (via upload of wallet.dat) all your private keys to be managed by Mt. Gox. All ...