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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127 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, ...
3
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1answer
36 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
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2answers
33 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 ...
2
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1answer
103 views

Bitcoins lost in Bitcoin Core?

I sent a small amount of bitcoins to my bitcoin core account when I was messing around learning to use bitcoins several years ago. I am trying to access these coins but I never got along to utilizing ...
0
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0answers
54 views

Where is wallet.dat file?

I have clearly installed Windows 7 and Bitcoin Core. There is no Bitcoin folder in {User}/AppData/Roaming... Blockchain is dowloading but I cannot find where it is and wallet.dat also. Anybody help? ...
1
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1answer
112 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 ...
0
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0answers
21 views

How I may get from mkey + salt from pywallet to my last passphrase or WIF private key with steps?

How I can get from known master key , salt,getting from pywallet,convert it to my last used passphrase or WIF private key.If may write in steps what need do.What also need know?
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0answers
17 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
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1answer
341 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 ...
1
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1answer
16 views

Export all address from bitcoind on one server to bitcoind on another server

I need to install bitcoind on a new server, but I already have many addresses in use on the old server. If I want to reuse all of those addresses on the new server, do I need to copy just the wallet....
0
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0answers
48 views

I get in bitcoin-qt wallet is encrypted and unlocked now,what I should do next?

I get for my wallet in bitcoin-qt wallet is encrypted and unlocked now.What I must do for wallet will decrypted and unlocked?I have some coins in wallet,I know passphrase,how send my coins to other ...
1
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0answers
18 views

Import Wallet.dat with bitcoins on it [duplicate]

This might sound a bit odd. I have had a Bitcoin app for a few years now. A few years ago I made a copy of Wallet.dat and put it on a stick. Now my computer crashed and i don't know how to import it ...
8
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1answer
320 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 ...
1
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0answers
111 views

How do I import my wallet.dat file into a new wallet? [closed]

I have my wallet.dat backup file, but Bitcoin Core isn't able to verify it. How do I retrieve my backup?
1
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1answer
149 views

Account Addresses after moving wallet.dat to new computer

I reinstalled bitcoin on a new computer, and took my old wallet.dat file from an old pc that had v.0.3 of the bitcoin software. I had 2 receiving addresses when I started. When I typed ...
3
votes
1answer
62 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'...
0
votes
1answer
273 views

Please help! How do I transfer my wallet from bitcoin core to MultibitHD?

I (should by now) have bitcoins in my wallet,I sent them to my wallet whilst i was using bitcoin core but after taking days to sync (and it still hasn't synced) i have given up and installed ...
1
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0answers
184 views

Import OLD wallet.dat to new Bitcoin core

i made a wallet.dat backup in an old version of bitcoin qt. The mac where i had wallet is dead. In other mac with the last version of bitcoin core when i try to replace the wallet.dat the app crushes. ...
2
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1answer
72 views

Why does my wallet size increase over time?

Why does the size of the output of      bitcoin-clibackupwallet or, equivalently, wallet.dat increase over time?
1
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1answer
167 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 ...
0
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1answer
166 views

Can old wallet.dat (offline long time) still receive money?

I have an old wallet.dat file (from a backup) and no client installed since a very long time. Recently some transactions have been made (BTC have been sent to my address). Will this old wallet.dat ...
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0answers
51 views

Bitcoind writes complete wallet.dat regularly which is a problem, what can i do?

i have troubles with my system, using iotop i identified bitcoind as the source of problems. I am running bitcoind of bitcoin-0.10.0-linux32 and am using the RPC calls of bitcoind. My wallet file is ...
0
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1answer
121 views

wallet.dat file compromise

If the private key(s) are/is in the wallet.dat file, then isn't it overly exposed to hackers? Can't a hacker just read my C:[dir]\wallet.dat file and take all the bitcion?
2
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1answer
393 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, ...
1
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3answers
112 views

Can I generate payment adresses while offline?

So I'm using the original bitcoin client. What if on a computer without internet (A) I generate a bitcoin address and then use this address to receive a payment (by using an other computer with ...
1
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1answer
296 views

How in laymans terms do I restore a .dat BTC backed up wallet file on my mac please? [duplicate]

the bitcoin wallet backup.dat file is in my documents but I'm not an advanced computer user I have the complete bitcoin qt on my computer but don't know how to restore from the backup
2
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1answer
324 views

Transaction was rejected - Bitcoin QT, recovered wallet.dat

I recently installed a new version of Windows on a new HDD, but I'm having problems getting my old wallet.dat to work. Here's what I've done: Install latest Bitcoin Core. Copied over the blocks and ...
0
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1answer
979 views

Passphrase lost for my wallet.dat

I need help to unlock my passphrase. I don't remember setting up one, but now there is a pasphrase. Eitherway I am unable to send out coins from my LitecoinQt to the exchange.
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0answers
48 views

can we create subjective trading platform using bitcoin and smart contract where payments are taken in stages?

Is it possible to create a subjective trading system (for eg: second hand goods like laptops, television cell phones etc) using concepts of bitcoins and smart contracts. Payments on the system would ...
3
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2answers
380 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 ...
1
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1answer
2k views

How can I convert a wallet.aes.json file from Blockchain.info to a wallet.dat file?

I'd like to convert my Blockchain.info wallet to a local Bitcoin-qt wallet. How can I do that? (I am fine with using command line tools.)
1
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1answer
532 views

Restore wallet.dat on windows 8

How do I use my wallet.dat on my windows 8 bitcoin qt? Someone posted this C:\Documents and Settings\YourUserName\Application data\Bitcoin (XP) C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista ...
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2answers
298 views

Bitcoin core: why does the wallet file contain transactions?

I really don't understand why the strong coupling here. I mean, whenever I go and make a backup, if there's a new transaction involved, the hash of the backup changes. I wonder why this is. And ...
0
votes
1answer
232 views

How can I find out which wallet belongs to which cryptocoin? [duplicate]

I have multiple decrypted wallets in the same folder. How can I find out which wallet belongs to which cryptocoin? All wallets are named wallet_x.dat, so the name gives no hint. UPDATE: I have no ...
4
votes
1answer
1k 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 ...
1
vote
1answer
675 views

How to merge two wallet.dat files

I know about pywallet, about this modification for bitcoind, but what is a simple way to merge two wallets, or export a list of private keys and addresses of all of wallets from litecoin, dogecoin, ...
2
votes
2answers
130 views

How do I recover newly created bitcoin addresses from an older wallet.dat?

I had a bitcoin wallet and several other coins' wallets on my laptop and did a backup for my wallets several months before the laptop died. Between that time, I had created several new bitcoin ...
3
votes
2answers
5k 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, ...
0
votes
1answer
64 views

Can I limit the back-up data in wallet.dat?

I want to know is it possible to back-up manually from wallet.dat. I am running Dogecoin daemon locally. Scenario: say user (user1) have some dogecoin balance in addr1 another user (user2) have ...
1
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2answers
5k views

How to import old wallet to Multibit?

I had 2 Bitcoins on my old PC and got a virus so did a format. But I also did a backup of my bitcoin wallet. Now I want to sell these bitcoins but when I went to the site, the official client was ...
2
votes
1answer
6k 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 ...
0
votes
1answer
487 views

get public key from wallet.dat

Is there a way to get the public key of a given wallet.dat to check the balance in the blockchain to avoid having to install the wallet and read all blocks?
1
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1answer
1k views

What happens if I delete wallet.dat?

I have this question, say I have my coins in my local wallet and 1 of 2 things can happen, say I somehow delete the wallet.dat file or some kind of malware deletes the file. I have the password ...
1
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1answer
276 views

Do all Crypto Coins use the same Wallet Format?

There are many crypto currencies now, BTC, LTC, MTC, Potcoin and so on. Each of these have their own wallet.dat files used by the client software. My question is: Do all these crypto currencies make ...
5
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2answers
656 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 ...
1
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1answer
284 views

What is point of encrypting wallet, if Bitcoin API's sendtoaddress needs passphrase?

The Bitcoin API enables programs on the server to use JSON RPC to interact with the Bitcoin wallet. Most commands do not need the wallet locked (which I assume is the same thing as encrypted). ...
0
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1answer
99 views

What is wallet.dat.gpg?

I'm trying to convince myself that I'm backing up my wallet correctly. I am told my private keys are in the wallet.dat file, but what is wallet.dat.gpg? It's not listed here.
0
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1answer
32 views

How to store wallets online?

Something like blockchain.info appears to keep full wallets online. Do they run a standard bitcoind on thousands of servers (one per person)? Or are the somehow managing to keep individual wallets ...
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2answers
70 views

Multiple copies of wallet.dat with a constraint

I know it is generally a very bad idea to share one wallet.dat between many clients on different machines because public/private key sets start divirging after some time if all the clients are allowed ...
0
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1answer
508 views

I want to use another wallet.dat file with bitcoin-qt. Is this possible?

my situation is the following: I have a laptop with not much space on disk and therefore using bitcoin on a stick (I start bitcoin-qt with the argument "-datadir=location/to/stick). Now I wanted to ...