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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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8
votes
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,...
4
votes
1answer
13k 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 ...
10
votes
3answers
61k 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 ...
4
votes
2answers
2k 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 restored ...
11
votes
4answers
21k 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 ...
9
votes
3answers
9k 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?
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
216 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 ...
6
votes
2answers
6k views

How frequently should one update wallet backup?

How frequently should one update a wallet.dat file backup?
6
votes
1answer
951 views

Why is the Bitcoin Core wallet database moving from Berkeley DB to SQLite?

Why is the Bitcoin Core wallet moving from Berkeley DB to SQLite for its database backend?
4
votes
1answer
11k 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 ...
1
vote
3answers
537 views

How can I import a private key into a pruned node?

I am trying to restore my Bitcoin Core wallet, but I only have the private key and passphrase, I don't have a wallet.dat file. I tried using importprivkey privatekey xxxxxxxxxxxxxxxxxxxx which gave ...
9
votes
2answers
9k 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
3answers
16k views

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

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, ...
3
votes
1answer
2k 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 ...
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 ...
2
votes
1answer
130 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?
1
vote
1answer
145 views

Upgrading/converting bitcoin core wallet between platforms

After 2 years of being shut down, I am trying to revive my bitcoin full node, while both switching platforms and upgrading to the current version in the process. Everything works but the wallet. The ...
1
vote
1answer
430 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
1k 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
1answer
635 views

What happens to wallet.dat if I uninstall and re-install on Windows Bitcoin desktop client?

If I uninstall Bitcoin Core desktop client, what happens to the wallet.dat? Is this erased or left in place? If I install Bitcore Core desktop again, does my wallet.dat get overwritten?
0
votes
1answer
326 views

Bitcoin-Qt client wallet.dat extract private key to import on another service

I have a file: wallet.dat where should be saved one or more private keys of my old wallet linked to one/more public btc addresses. I also had more than a wallet, so I don't really know if there are ...
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
2answers
401 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
1k 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 ...
-1
votes
1answer
156 views

Bitcoin Recovery Email or Hard Drive

I received 100 bitcoins from a donor around 2009 but do not remember name of donor, their email address or password etc to recover the bitcoins! Any suggestions or advice? I am seeking someone to ...