Questions tagged [wallet.dat]

This tag should be used for questions regarding wallet.dat files. A wallet.dat is a file used by Bitcoin Core which stores private keys and other information necessary to spend Bitcoin.

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votes
2answers
1k views

Identifying wallet file among soup of recovered .dat files

Hello my friends! Here is my situation: I accidentally deleted a partition on my HDD containing the only copy of my bitcoin wallet. Facepalm. After running data recovery tools, I've found and ...
10
votes
4answers
18k 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 ...
3
votes
3answers
19k views

opening an old wallet.dat

I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet.dat to my dropbox. According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt ...
9
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3answers
5k views

How to determine what type of coins a wallet.dat contains?

I have a number of wallets. Is it possible to detect the type of (alternative) coin it contains?
8
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2answers
8k views

Backing up my bitcoin wallet - is wallet.dat all I care about?

I know that there are many duplicates of this but I'm hoping that the way in which I word this explains and helps not just me, but others as well. In any of the coin wallet bitcoin and the alt coins,...
3
votes
1answer
2k views

What are the contents of the wallet.dat file? What is Key pool, default key and reserve keys?

There is this https://en.bitcoin.it/wiki/Wallet simple explanation of the contents of a wallet.dat file from bitcoin-core/bitcoin-qt. I have some questions about this: What is the default key? Does ...
7
votes
1answer
9k views

How do I retrieve my backed up wallet to Bitcoin Core?

I backed up my Bitcoin wallet on a drive for safety. Luck has it that my computer crashed. So now I downloaded Bitcoin Core, but do not how to retrieve my backup. Please help. thanks
5
votes
1answer
209 views

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 ...
2
votes
1answer
8k views

How to recover an old wallet.dat file

Back in 2011 when bitcoin started to make the news, I created a wallet and let it run for a bit (no pun intended). It almost fried my computer so I stopped. In the process, I think I remember I mined ...
6
votes
2answers
6k views

How frequently should one update wallet backup?

How frequently should one update a wallet.dat file backup?
4
votes
1answer
10k views

How to get private key from litecoin-qt wallet?

I want to backup only the private key, not the full litecoin-qt wallet for the reason that the wallet can be used only with litecoin-qt client and if I have to use it after few years or on other ...
9
votes
2answers
8k views

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 ...
4
votes
1answer
3k views

Wallet.dat (<0.4.0) format: retrieving Bitcoin, possible security concerns

Whilst moving houses I came across some old HDDs which I've just found contains a wallet.dat from August 2011. The version of Bitcoin-qt must be 0.4.0 as I know the wallet.dat is password encrypted, ...
3
votes
1answer
1k views

Found an old wallet with transaction history with coins (unconfirmed), but no balance [duplicate]

I have found an old bitcoin wallet in my files. I can see there are old transactions but they aren't confirmed. But there should be more BTC received than was sent, so there should be a balance. Is ...
3
votes
2answers
11k views

How do I load wallet.dat on new PC and import everything into Electrum?

My primary PC died last month due to what I believe is a motherboard error. My EVGA board displays "FF". The fans, drives, everything powers up as usual. But I don't hear any beep, no POST, no BIOS, ...
2
votes
1answer
4k views

What is the wallet in MultiBit?

What is the actual wallet? The slight confusion comes from the install note - "Backup all your wallets. You can do this by exporting your private keys using 'Tools | Export Private Keys'." If a new ...
1
vote
1answer
349 views

Migrate from Bitcoin Core Wallet to somewhere else before sync completed

I created a Bitcoin wallet yesterday using Bitcoin Core Wallet application and bought some bitcoin via buy.bitcoin.com to the address mentioned in File>Recieving Address in my Bitcoin Core Wallet. ...
1
vote
2answers
999 views

If I backup my wallet.dat once, am I forever safe?

I have a dogecoin (though should be similar to bitcoin/altcoins) wallet and I encrypted and backed up my wallet.dat file to a few different places (different cloud providers). Now, assuming I never ...
1
vote
0answers
90 views

Do Berkley DB versions need to be the same?

If I build using --with-incompatible-bdb, will the resulting wallet be incompatible with the bitcoin core client from bitcoin.org? What if I'm using a newer version?
0
votes
1answer
1k views

Lost my bitcoins, was I hacked?

Last time I used my Bitcoin-qt client was a few months ago. I made a backup of the wallet to an external USB drive. Yesterday, I started the client and after it synchronized the block-chain, I saw ...
0
votes
0answers
139 views

Recovering wallet after formatting SSD

I am not exactly sure what I need to do and I do not want to accidentally overwrite my disk. I may have already done so. After searching my web history I have found the BTC address that my BTC is on ...
0
votes
2answers
141 views

Do wallets save a backup of my private keys and seed?

Let's say that I do not trust a lot in myself and my ability to not screw my computer, so also my private keys. Knowing the concept of wallet HD and having seeds to recover all your private keys ...
0
votes
1answer
631 views

What is saved in wallet.dat exactly? [duplicate]

As I know, wallet.dat saves all related data for a bitcoin wallet. However, I don't understand what precisely is saved in the wallet.dat. I think it must contain several private keys. Does it also ...