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
10k 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
votes
1answer
51k 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
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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?
6
votes
3answers
21k 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 ...
15
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3answers
3k 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,...
10
votes
5answers
12k 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 ...
12
votes
2answers
47k 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 ...
3
votes
1answer
4k 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 ...
12
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 ...
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
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
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
211 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 ...
2
votes
1answer
9k 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
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 ...
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 ...
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 ...
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
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?
3
votes
3answers
3k 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, ...
3
votes
3answers
328 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
1answer
842 views

How to do paper backup and restore for bitcoin core

Since bitcoin core is HD wallet, it should be possible to make "seed" like backup for it and there should be way to restore the wallet from it as well. I know there is dumpprivkey, but it needs to be ...
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 ...
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, ...
3
votes
1answer
114 views

What actions trigger the need to obtain a new backup with Blockchain.info/wallet?

Other clients, including Bitcoin-Qt, use a key pool so that a backup is still valid for a while. Blockchain.info/wallet doesn't use a key pool. After a backup of the wallet is obtained and archived, ...
2
votes
3answers
584 views

Wallet.dat can contain only 100 private keys even if I back up?

Considering the Bitcoin client for Windows 0.8.1: So the best way (if I have already used up 100 keys) is to send bitcoins to different wallet and then to newly generated one? When I want new keys, ...
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 ...
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
2answers
374 views

How much space does a backup of a wallet usually take?

I have a Bitcoin QT v0.8.5-beta wallet (downloaded in 2013) which I will backup before trying to export the private keys to a Electrum wallet. I have found a backup button in the QT wallet, but it ...
1
vote
3answers
1k 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
votes
2answers
233 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 ...