The process of copying one or more files to an alternate location for safekeeping. Typically refers to the copying of Bitcoin's wallet.dat file but may also refer to the built-in JSON API command to perform such a backup.

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13 views

Can I ignore the blocks directory for time machine backups on OSX?

After installing Bitcoin-QT I have over 40GB of files in the ~/Library/Application Support/Bitcoin. It seems that the most important file there is wallet.dat. Does it mean that I can exclude from time ...
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1answer
24 views

Import two wallet.dat into Bitcoin-Qt client

This is very closely related to Import wallet.dat into a new Bitcoin-Qt client, but I feel this is not a duplicate because the (great) answer to that Q is for only restoring one wallet. I used ...
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2answers
39 views

Blockchain.info - Forgot My Secondary Password. How to recover it?

I haven't accessed my blockchain.info account and I completely forgot my secondary password in order to send out bitcoins. I still have my mnemonic, but that's totally useless and MISLEADING as it ...
0
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1answer
33 views

Multibit Private Key Restore

I backed up my private key and restored it into a new copy of Multibit (difference machine). The import was successful but the public key address has not been updated with my previous address. I've ...
4
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1answer
63 views

Is mainline Bitcoin planning on switching to deterministic wallets?

Deterministic wallets enable reliable backups but the mainline client doesn't use them. I was told that bitcoind and Bitcoin-QT are planning on switching to deterministic wallets by default, is this ...
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0answers
36 views

I just restored my Mac from a time machine backup, but no coin wallets got backed up?

Every other file seems to have been backed up and restored except I don't see any coin folders in the application support folder in the library. Did I do something wrong? Are these files ...
3
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1answer
79 views

Live Blockchain Backup

What is a good strategy for backing up bitcoind's blockchain files (not its wallet file) without having to take (e.g.) a bitcoind that is powering a counterparty-server instance offline? Copying the ...
3
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1answer
183 views

Mycelium wallet file

I have a fairly straightforward question that's still unanswered after googling for days for a definite answer, I hope you guys can help me out with this one here. Background: I have Mycelium Bitcoin ...
2
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1answer
60 views

Error: Wallet backup failed! (code -4) when setting up bitcoin-qt for first time

I downloaded and ran bitcoin-qt to play around with. First thing I did was create a wallet passphrase. The second thing I did was try to create a wallet backup. Then I got this message: Error: ...
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1answer
27 views

How to restore a backup made when using the big 20 Gigabyte Core Wallet to current MultiBit wallet?

Been running an s3 with slush's pool for a month or so and accumulated maybe 20% of a Bitcoin. I started out using the gigantic Bitcoin Core Wallet because when I first learned about Bitcoin a couple ...
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1answer
23 views

What are the limitations to an outdated backup?

My backup private keys were made in Jan and my computer crashed in May. If I upload the keys on a new wallet, will it show my bitcoin balance from May or January?
7
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1answer
213 views

How many addresses does my wallet.dat contain? Do I need to make a new backup every time I make a transaction?

I'm having little problem here, trying to figure out the safest way to backup my wallet.dat to make sure that no BTC may be lost in case of recovery. I'm not sure how the process of adding new ...
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1answer
41 views

How often should I back up my wallet if I use Bitcoin-Qt client? [duplicate]

I am new to bitcoin and the first client I installed was Bitcoin-Qt (Bitcoin Core v0.9.3.0-gcea5e49-beta). After installing and downloading the blockchain I immediately created a backup file. The ...
2
votes
2answers
104 views

Unable to open Backup binary file Linux

I recently reinstalled Linux mint; I backed up my wallet, and I am unable to import the backup created from the original wallet (Qt version 4.8.6.) to the newly installed wallet(Qt version 4.8.6.) I ...
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1answer
368 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 ...
2
votes
1answer
80 views

Multibit saving after transaction - what do wallet private key backups look like, if they exist?

I sent some bitcoins from a multibit wallet to another wallet. I recently realized that the change not sent in this transaction is sent to a new address. This means I didn't back up the key of this ...
2
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2answers
97 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 ...
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1answer
38 views

One private key in different locations?

Can I still use my key pair to receive and send bitcoins, even if I imported the private key in another location? I wondered about this, when I planned to import a backup of my online wallet in a ...
0
votes
1answer
60 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 ...
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1answer
701 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 ...
2
votes
2answers
534 views

Bitcoin-qt data on external drive

I have done the instructions listed here: How to move Bitcoin data from Application Support on external drive [mac] It works fine for a flash drive connected the mac, but I wanted to have the data ...
0
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1answer
485 views

Recover a bitcoin wallet in Hive

I've recently reformatted my Mac, and reinstalled Hive. I have a back up to Dropbox option enabled in Hive, and my old bitcoin wallet file is there. But I cannot find any way to recover my old bitcoin ...
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1answer
45 views

Restore New Funds after Blockchain Backup

If I transfer money into my Blockchain account after receiving my Json wallet backup by email, would it restore recently added funds?
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2answers
245 views

How do I test my wallet backup?

I follow the instructions for wallet backup and save them digitally. What's a convenient way to occasionally test my wallet backup. I want to make sure that I'm not doing something stupid & my ...
0
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1answer
417 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 ...
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2answers
798 views

Is it sufficient to backup the private keys of my android Dogecoin Wallet?

I installed the langhans Dogecoin Wallet on my android device and backed up my private keys. Is it sufficient to backup the wallet to avert loss in case of loss of or damage to the phone?
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1answer
2k views

How can I restore my dogecoin wallet (android client)

How can I restore my dogecoin wallet backup? It was created by the dogecoin android client and lives in my Google Drive account. This question already exists, but no answer is given for Android (and ...
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2answers
440 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 ...
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1answer
102 views

Backup wallet of single account

As far as i know that online wallets as Blockchain.info is a Bitcoind instance that gives each user an Account and each account related to multiple addresses through JSON-RPC calls, how ...
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2answers
3k 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 ...
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3answers
97 views

What do I need to do to protect my wallet on my computer? [duplicate]

I am using Multibit. How to overcome if my computer burns off?
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1answer
142 views

How to keep Bitcions when reinstalling OS from fresh

I have the official Bitcoin wallet and I would like to do a fresh install of everything on the computer. How can I save my Bitcoins (and hopefully block chain)?
2
votes
1answer
76 views

What is happening after backup?

Let's say I have a wallet backup burned on a CD. In that moment I have 10 coins. And I start to make transactions. Then my hard-drive crashes and in the moment of crash I have 20 coins. When I restore ...
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2answers
539 views

Android Bitcoin Wallet - change addresses and key backup

I've had the Android bitcoin walllet for some time. When I installed it I was assigned some public address/key. I have made various transactions in and out of the wallet but as fas as I can telll the ...
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0answers
109 views

What to backup to save my coins? [duplicate]

Do I have to backup only wallet.dat or should I backup anything else to have my coins safe?
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1answer
4k 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 ...
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0answers
42 views

Unconfirmed Transaction after Backup

I sent my bitcoins from one account to a new account I created. The original account was on a Mac Mini, the new account was on a MacBook Pro. The MBP dies and I am on a new MBP reinitialized using a ...
0
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1answer
987 views

Restore encrypted wallet

I need to restore a wallet created with bitcoin-qt which was encrypted. I have the encrypted wallet.dat file only. Do I restore this simply by replacing the current wallet.dat with my backup ...
3
votes
2answers
2k views

How to obtain the private key of an Armory wallet?

I have a paper backup, a digital wallet backup and all the passwords: how do I retrieve the private key for a watch-only wallet so I can send some coins out of it (created in armory and imported into, ...
0
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1answer
134 views

Sequence of events that can cause lost money in MultiBit

If you create a new address in MultiBit, then transferred money to the new address before the wallet was backed up, then your hard drive crashed, will you lose the money? The first Bitcoin client had ...
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2answers
204 views

What situations will you lose your bitcoins during backup?

I read this paragraph from bitcoin.it but I don't get it completely. The wallet contains a pool of queued keys. By default there are 100 keys in the key pool. The size of the pool is ...
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1answer
665 views

I had $1000 on an encrypted wallet and need to restore it on bitcoin qt

I reinstalled windows7, but luckily it saved my old windows in windows.old plus i backed up encrypted wallet to external device. How exactly do I restore it?
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1answer
235 views

Have I backed up my wallet sufficiently?

I'm trying to make sure I'm backing up my bitcoin wallet sufficiently. I only have about $60.00 worth, so I'm not looking for super secure encryption or anything. I just want to make sure I can ...
0
votes
1answer
120 views

Multibit backup created partial transactions

Here's what happened. I took backup of the following: savings.wallet savings.info savings-data (and all its contents) Then I connected to internet, started my MultiBit. The wallet was open ...
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2answers
1k views

Advice on running two wallets please

Could anyone tell me please if it is possible to run two versions of the Bitcoin qt client independently on the same pc? The reason I ask is that I wish to make a bitcoin gift to someone on a USB ...
2
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3answers
244 views

if my wallet is sufficiently secure, can I ever lose my coins?

I've made an offline address and only have the key stored on 2 encrypted flash drives stored in different locations with the private key written physically on paper and stored in 2 locations. Do I ...
2
votes
2answers
364 views

If your wallet.dat back up is outdated, do you lose your coins since the back-up?

My last back up of wallet.dat was from the beginning of the year. My computer crashed recently and I don't have the most recent wallet.dat after receiving bitcoins. If I use my outdated wallet.dat, do ...
6
votes
2answers
3k views

How frequently should one update wallet backup?

How frequently should one update a wallet.dat file backup?
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1answer
3k 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 ...
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4answers
719 views

Backing up wallet with pen and paper, destroying electronic copy, restoring from keyboard — how?

I have bitcoinQT with some coins on it. I want to use the internet on a regular basis from this computer. I do not trust the authors of internet applications and commercial operating systems. I ...