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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13
votes
1answer
16k views

How can I create a new wallet on Bitcoin Core?

How can I create a new wallet on Bitcoin Core (Bitcoin QT)? I forgot my old password, so I can't create transactions using the old wallet. I don't have money on my old wallet, I just need to create ...
13
votes
7answers
34k 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 pywallet.py,...
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 ...
10
votes
1answer
2k views

Filesystem is corrupt. How to find wallet.dat?

A customer of mine brought me a 2TB crashed harddrive. The drive itself is not damaged physically, but the file tables (MFT / NTFS) are corrupt so there is zero ability to recover files with their ...
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 ...
9
votes
4answers
20k 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. ...
9
votes
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
votes
3answers
984 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 ...
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,...
7
votes
1answer
2k views

Can I retrieve my bitcoins from years ago that I never received?

How can I get hold of my bitcoins that never made it to my wallet years ago? I purchased some bitcoins years ago (have got my receipt and all emails from who I purchased). I downloaded Bitcoin-Qt 7, ...
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
6
votes
2answers
2k views

Is it possible to send coins WITHOUT importing private key?

I have a cold storage wallet that I periodically move funds into. I want to be able to send funds out of the wallet quickly. Right now, I have to keep a clean VM up with the full blockchain, then ...
6
votes
2answers
6k views

How frequently should one update wallet backup?

How frequently should one update a wallet.dat file backup?
5
votes
1answer
15k views

How can I get the private key from wallet.dat from 2011 Bitcoin software on WinXP?

I set up Bitcoin (application) software on a WinXP machine in 2011 and received some Bitcoin. I set the machine aside, disconnected from the internet. Now I want to access the 2011 Bitcoin. Lately I ...
5
votes
3answers
3k views

How do I find a renamed wallet whose name I can't remember?

I bought BTC in 2011 and renamed my wallet.dat to something else that I cannot remember. How can I find my wallet file on my computer? I'm prepared to use the command line and scripting.
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 ...
5
votes
2answers
399 views

Are desktop wallets transferable?

I know you can make a transaction across the blockchain to move your Bitcoins from say Bitcoin-QT to Multibit, but is it possible to import my wallet.dat file from Bitcoin-QT to another desktop wallet ...
5
votes
2answers
11k views

Can I check balance of wallet.dat without downloading the block chain?

I have bitcoin associated with a wallet that I am now moving from a server to external storage for backup. As far as I know, all I need to do is copy the wallet.dat file to external storage and I'm ...
5
votes
2answers
3k views

Import android mobile wallet to desktop

I have an android wallet (The Andreas Schildbach one). Is it possible to import this wallet into my desktop wallet? I would like to be able to manage my funds using my mobile or my desktop - both ...
5
votes
1answer
841 views

Does Mt. Gox's “Redeem a wallet.dat” feature require an unencrypted wallet? [closed]

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 ...
4
votes
2answers
1k 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 ...
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, ...
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 ...
4
votes
1answer
662 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? If ...
4
votes
3answers
4k views

How to dump all of addresses from wallet.dat for other alt-coins?

I'm on binarycoin now, with solo mining. Luck smile to me. I'm found 5 blocks. It is 100.0 binarycoins. I'm trying to use "aggressive" speed-up, my daemon compiled with -O3. After last block I ...
4
votes
1answer
3k 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 ...
4
votes
2answers
4k views

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 ...
4
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 ...
4
votes
3answers
405 views

How can I verify my wallet.dat file against an older version?

I recently ran into an issue with an unsafe shutdown corruption on an NTFS partition in such a way that the files all existed, but chkdsk had to be run to verify some non-essential files. My peers....
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 ...
3
votes
1answer
2k views

Bitcoin-Qt - backing up unencrypted wallet then encrypting it

If I back up unencrypted wallet.dat somewhere safe (TrueCrypt volume) and then encrypt the wallet by Settings / Encrypt Wallet, will my backup still be useful? I think the message after encrypting the ...
3
votes
2answers
3k views

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

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 ...
3
votes
2answers
432 views

Bitcoin wallet - why do i need it for cold storage?

Why do I need a bitcoin wallet for cold storage? Can I just write down randomly generated public address and private key pairs, and keep these on paper? I am confused by the apparent need for a ...
3
votes
1answer
73 views

Why does wallet.dat differ after running?

What information is exactly saved inside the wallet.dat file? When I run the bitcoin daemon, then stop, then compare the new wallet.dat file with the old one, the binary files differ, although I didn'...
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
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 ...
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, ...
3
votes
2answers
7k views

how do I create and encrypt a dogecoin wallet?

I've looked at the dogecoin wiki, but don't see any resources explaining how to actually create a wallet and encrypt it. I'm running dogecoin-qt on Linux. Under "much receive" on the GUI, I can add ...
3
votes
1answer
488 views

How do I find out which wallet fits which client?

I found a really old Bitcoin wallet, a wallet.dat file, and tried to open it. Bitcoin Core told me that the wallet is corrupted. But I also found out that different clients make different wallets, so ...
3
votes
1answer
182 views

What is the risk of using wallet.dat files for long term cold storage?

i created these wallet.dat files on an offline machine in 2014 using QT. I've sent coins to the receiving addies over the years. these files are bip38 encrypted. do i need to do anything to these ...
3
votes
2answers
726 views

Safely transferring bitcoins from wallet.dat to cold storage

A similar question was asked by me in 2014, but I did not find the answer satisfactory back then, and I hope some things changed since in the last two or so years. I have a wallet.dat file with some ...
3
votes
2answers
4k views

Recover Old Bitcoin Wallet (Currently getting a Segfault)

I have a bit of bitcoin lingering in an old bitcoin wallet (circa 2011). I just restored it from a backup but I can't seem to load it into bitcoin-qt. If I launch the app, shut it down, the copy in ...
3
votes
2answers
1k views

How can I watch an address on Windows and Android?

I want to be informed of transactions of my Bitcoin address on the Windows and the Android app. Can I use the same Bitcoin address on both? If yes, how can I backup the address on Windows and restore ...
3
votes
1answer
578 views

Bitcoin-QT client shows coins, but cannot find wallet.dat [duplicate]

It's been a couple years, and I opened my bitcoin-qt client. It says I have coins, but is taking days to "sync with network". Further, I cannot find a wallet.dat file anywhere on my system. How ...
3
votes
0answers
281 views

Transferring wallet.dat from PC to Raspberry PI

I have the Stratis QT sofware running on my computer. I also have a working version of stratisd running on a raspberry pi, which I set up following this tutorial If I try to swap my wallet.dat on my ...
3
votes
0answers
944 views

Format of mkey field in encrypted wallet.dat file

I am writing a C++ application to scour large files (typically disk images) for wallet.dat files, with the intention of recovering the private keys. At the moment I am struggling the data contained ...
2
votes
2answers
732 views

How to migrate bitcoin node from one computer to another

In my old computer some addresses have bitcoin and it is showing on blockchain. When i am trying to get balance of the same addresses in my new computer where i have synced bitcoin full node ,I ...
2
votes
2answers
546 views

Is wallet.dat linked to the blockchain file? [duplicate]

Just started using Bitcoin today and since I needed them rather urgently, I hastily bought them and transferred them to my wallet before actually setting up my wallet. The client is downloading the ...
2
votes
1answer
3k views

How does salvagewallet work?

What can I expect using the salvagewallet command? What is it actually doing? I am asking specifically about the zcoin fork, if that matters. How can this help with corrupted wallet? How can Wallets ...
2
votes
1answer
4k views

How can I fix corrupted encrypted wallet.dat?

My only one backup of encrypted wallet is corrupted (last time when backed it up i probably didn't shutdown bitcoin-qt), with hex editor i found in it: mkey ckey (117 that looks fine) Does this ...