Questions tagged [backup]

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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44
votes
10answers
11k views

How can I keep my wallet secure?

The standard Bitcoin client does not encrypt wallet files, so any malicious user that gains access to this file will be able to transfer all the coins to their own wallet. Furthermore, if I lose the ...
32
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1answer
53k views

How can I restore my wallet?

I just purchased a new laptop and I want to decommission my old one. I have a back-up of my wallet.dat file copied to my new PC. What do I need to do to restore it to my Bitcoin (Windows) client? ...
23
votes
3answers
3k views

What happens when someone sends bitcoin to my wallet?

I didn't get it. Should my wallet be online? What if it becomes corrupted before I make a backup? Can I use my backup wallet that was backed up few days ago?
23
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2answers
5k views

How should you backup your wallet?

How often? Is backing it up once enough? Any best practices to storing the backup?
15
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3answers
4k views

Estate planning: how can I ensure my bitcoins are inheritable?

What are good ways to ensure my bitcoins can be inherited by my family when I die or become permanently incapacitated? I think there are probably two significantly different situations to account for,...
13
votes
1answer
2k 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 ...
12
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2answers
51k views

If I've lost my wallet, but know my bitcoin receiving address, can I get my bitcoins back?

Although I do have a backed up wallet file, I seem to also have a second bitcoin receiving address, which doesn't seem to correspond to it. Is there a way to recover any coins associated with that ...
12
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5answers
13k 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, ...
11
votes
4answers
2k views

Is it safe to email an encrypted wallet to myself?

I'd like to setup an automated process to email my encrypted wallet to myself, so that if, for instance, my house burns down, I've got easy access to a recent copy of my wallet stored off-site. I've ...
11
votes
3answers
631 views

What is the absolute minimum amount of information required to have access to a bitcoin balance and or a wallet file?

As far as I gather a wallet can remain offline indefinitely transactions are being sent to it. The network will keep track of the transaction so that the next time it is connected it will catch up. ...
10
votes
3answers
4k views

What happens when the same wallet (private key) is used on several machines?

Let's say I copy my wallet to another computer and start using it there. What happens? Can both computers send and receive payments to the same address(es) in the wallet? A different scenario with ...
10
votes
5answers
16k views

How to restore locally a MyWallet backup?

The website blockchain.info has an online wallet system MyWallet which creates backups with a .aes.json extension. While I understand it's a json file encrypted with AES using my passphrase, I'm still ...
10
votes
3answers
2k views

Is it important to have an unencrypted backup of the private key?

Am I correct that in not having our private keys written in paper or otherwise backed up we are implicitly trusting the wallet developers to keep publishing wallet versions that are capable of reading ...
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 ...
9
votes
2answers
684 views

How to configure the official bitcoin client to conveniently use offline wallets?

This is a follow up question to "How can I keep my wallet secure?" Is there a portable (at least Win32&64/Linux) to configure the official bitcoin client to use only offline wallets to be ...
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,...
8
votes
1answer
9k views

How do I backup my wallet?

Using bitcoin-qt, multibit, or any of the others, how do I backup and save my wallet in case I need to reinstall Windows?
8
votes
1answer
2k views

How do I restore a Lightning Node with active channels that has crashed causing data loss? Is it similar to restoring a Bitcoin wallet?

If my lightning node crashes after receiving payments (but before I have closed the channel) can I recover my funds? What happens if I do not have backups of all the channel updates? Is the ...
8
votes
1answer
1k views

Do I need to backup a wallet every time I generate a new address?

This question concerns the Armory client. Since Armory has deterministic wallets, do I only need to back up a wallet one time (after creation), or do I need to back it up each time I create a new ...
8
votes
1answer
1k views

How to debug a failed restore of a Namecoin wallet?

I bought some Namecoins a while back. With the upcoming Merged Mining patch, I reinstalled Namecoin 0.3.24.63 on my newly formatted computer, copied my wallet.dat from my backup to the right folder, ...
7
votes
3answers
1k views

If I wanted to print my bitcoins?

Suppose I wanted to print my bitcoins to paper for safekeeping. It would be impossible for a hacker to get at my computer. To do so I need to know where to find the private keys. Is there only one ...
7
votes
1answer
5k views

How to import a private key to an encrypted wallet (on standard client)

I have a standard client (QT client on OSX) with an encrypted wallet. I've tried to import keys with pywallet, but while it claimed to be importing them, when I ran again the bitcoin client, it said ...
7
votes
1answer
10k 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
7
votes
2answers
17k 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 ...
7
votes
3answers
24k views

Using dumpprivkey to make a paper backup

I'm just getting started with bitcoin and haven't acquired any significant amount yet, but want to feel relatively secure before I do. And at the moment, my fear of losing bitcoins or a device on ...
6
votes
2answers
5k views

Where is the Mycelium wallet file stored?

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 ...
6
votes
1answer
500 views

In a multisig wallet setup what needs to be backed up and why?

In a multisig wallet setup what needs to be backed up and why?
6
votes
2answers
6k views

How frequently should one update wallet backup?

How frequently should one update a wallet.dat file backup?
6
votes
3answers
4k views

Why can't I connect to bitcoind on localhost?

The initial question asked was as follows, but it turned out to be nothing to do with keypools: I had keypool=1000 before. Now I started bitcoind (the daemon version) with keypool=10000 option, ...
5
votes
3answers
5k views

Is it possible to make a paper wallet out of a bitcoin-qt wallet?

I have a single bitcoin address with all my savings on it. I want to make a paper backup for precaution (as if my hard drive somehow exploded) with that specific address. Is that possible? Keep in ...
5
votes
3answers
4k views

How do Ledger Backups get stored?

Scenario Say you have configured a ledger wallet with 10 BTC and 10 ETH. You then lose this said wallet but you have the 24 unique words. You buy another ledger wallet enter the 24 words and BAM, ...
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 ...
5
votes
4answers
1k views

How to redeem a private key in case it is compromised

I know MtGox allows me to redeem a private key, but that doesn't necessarily ensure that all the value is extracted from that address in a timely manner. Is there no simple way to send the entire ...
5
votes
1answer
701 views

Does bitcoin-qt support jsonrpc?

After some time away, and a dead Vista PC, I have come back to Bitcoin and installed the latest (0.5.1-beta) on Windows 7. (Don't worry, I didn't lose my wallet.) On my old machine, using bitcoin.exe,...
5
votes
2answers
7k views

What other wallets can import Qt's backup .dat file?

I've been using Bitcoin Qt on my work computer (my only working computer at the moment) but last week Windows 7 decided that the program's bypassing the firewall to download the blockchain was a ...
5
votes
1answer
6k views

How do I backup my Ripple wallet?

Ripple uses a Blob Vault structure to hold the wallet, but it currently resides on one centralized endpoint. It might be prudent to back up your wallet. How is it done?
5
votes
1answer
2k views

Can I synchronize the blockchain on one computer then transfer the files to another? [duplicate]

Possible Duplicate: Would it be possible to provide a downloadable blockchain that is updated and verified by a mass of people? If I install and synchronize the official Bitcoin wallet, can I ...
5
votes
1answer
147 views

How to migrate lightning nodes?

I am wondering what steps to take to migrate a lighting node to a different server, keeping the pubkey/identity. The safest option is obviously to close the channels first. How is the identitiy pubkey ...
5
votes
1answer
427 views

Keeping a portable long-term offline wallet

I'd like to keep some bitcoins as a long-term investment - store them to a pen drive which I stash in some safe place, or otherwise backup it securely, then remove all traces from my online computer ...
4
votes
2answers
13k 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 ...
4
votes
2answers
457 views

In case of physical wallet theft, quickest way to offload funds in wallet backup?

Assume one makes a secure online backup of their wallet and then their laptop or device that has it is stolen. For the sake of argument assume that the thief watched the user type their wallet ...
4
votes
1answer
5k views

How to restore from backup of Android Bitcoin Wallet

Bitcoin Wallet for Android allows you to back up your wallet. It asks for a password when doing so. After much faffing, I finally managed to.. dum, dum, dum! .. copy the file to the SD card, and ...
4
votes
2answers
1k 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: ...
4
votes
1answer
14k 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 ...
4
votes
1answer
277 views

When backing up a wallet, is it required to shut down the bitcoin client?

I am building a website, and would like to backup my wallet.dat file after every transaction occurs, but I would not like to have to shut down bitcoind every time I make a backup. The common wisdom ...
4
votes
1answer
484 views

Restore lightning network node/channels

If one wanted to restore a lightning network node, what files have to be saved? I read that saving hsm_secret is enough to restore private key(s), but I also read about a problem with channels. How ...
4
votes
1answer
604 views

How to backup paper wallet digitally

I'd like to move some bitcoin off an exchange and into a paper wallet for long term storage, but looking for ways to backup the keys in case of theft/fire/stupidity. My thought was to (on a new ...
4
votes
1answer
72 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 ...
3
votes
3answers
338 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 ...
3
votes
2answers
556 views

Backing up bitcoins on Mt.Gox

I have some bitcoins on Mt.Gox. Against the possibility that a nuclear holocaust or some sort of hanky-panky or the like were to wipe out Mt.Gox tomorrow morning, how should I back those up?