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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2answers
475 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 ...
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1answer
95 views

How to spend from the "master_private_key": “df484533kf5mzv83892a234a44ae9z83m832987a82mqwmdkks018121204v95las9"

I made a backup of an outdated command line interface BTC wallet, here is an example: "master_private_key": “df484533kf5mzv83892a234a44ae9z83m832987a82mqwmdkks018121204v95las9" How can I import this ...
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369 views

Where to store coins while I do a factory reset on my computer?

My Macbook is having some issues and I have a desktop wallet on it for Bitcoin, Litecoin and Ripple. I have been told to completely redo my laptop with a factory reset. How can I move or save these ...
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2answers
810 views

Backing up Bitcoin using only private keys?

So I'm really new to Bitcoin and cryptocurrencies, and I don't truly understand realtion between Bitcoin private and public key, and address! I understand that for every private key, there is a ...
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1answer
659 views

How to properly backup a address with private key after 'addwitnessaddress' command

I've received my balance to my addresss that starts with 3 which is after 'addwitnessaddress' command. I'd like to know that how do I properly backup my balance to keep safety. Bitcoin Core has a ...
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1answer
273 views

What can I do if I suspect that my Mycelium word list backup has been compromised?

When creating a backup with the Mycelium app, it gives me a list of 12 words which are used as some form of seed which I am supposed to write down and store in a safe place. Anyone with access to this ...
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0answers
110 views

Passing bitcoins on to heirs

What's the most foolproof way to ensure your bitcoins can be passed on safely to your heirs in the event of your death? Note this question has two levels of difficulty: safely passing on bitcoins to ...
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1answer
3k views

Backing up an Electrum wallet

I have just installed an Electrum wallet on my Ubuntu machine, and transferred some funds into it. I wish to back up the wallet, so if my computer is dead or stolen, say, I will be able to install ...
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1answer
2k 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 ...
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1answer
133 views

Do I have to make a back up copy every time I make a transaction? [closed]

In other words when I make another transaction but I only have the original backup when I restore the backup does it only show the amount from my original transaction or will it be updated to the ...
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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 ...
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1answer
197 views

Advice on upgrading firmware on Ledger Nano

I have the discontinued Ledger Nano hardware wallet. Ledger have released new firmware for this for SegWit and to allow splitting BCH. To perform the update, you have to wipe your keys and re-create ...
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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, ...
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1answer
113 views

Would backing up my private key be enough?

Lets say I put my wallet's private key on a rocket and fire it towards mars. In 50 years time I travel to mars for a cheap vacation and find my private key. Would I then have full access to my ...
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1answer
313 views

Paper wallet creation, how safe is this approach? [duplicate]

I would like to create several paper wallets for different crypto currencies. Now I've read through a lot of manuals and I tried to install this Ubuntu version on a USB stick which I wanted to boot on ...
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1answer
616 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 ...
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2answers
1k views

Is it possible to use the same BIP39 list of seed words to create addresses for different crypto assets?

Currently, as a matter of convenience, I'm holding small about of crypto assets on various exchanges. It's not ideal - I'd much rather store them locally, have access to the private keys, be in full ...
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1answer
368 views

Cryptocurrency Wallet Seed - mental backup?

Ok, so let's say I use a wallet that gave me a 12 word string as a seed. And I want to do a paper and "mental" backup - will write it down and will memorize the words. Where is the itch? Well, the ...
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1answer
161 views

Unable to access Wallet in Multibit HD - currupt password

After my computer died and was rebuilt I'm trying to restore access to my bitcoin wallet. I have my wallet words with I've confirmed are correct as I've used them in the past. I try to restore my ...
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0answers
303 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 ...
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1answer
403 views

How can I get back my bitcoin from a backup folder

I want to restore my bitcoin wallet which backup in 2013, I have the backup folder and a password(not secure words). Anyone know how to do?
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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
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2answers
3k views

Where is blockchain located on Mac for Bitcoin-Qt?

I attempted to use Bitcoin-Qt on my PC but it could not handle the Bitcoin blockchain. I therefore decided to give up and to delete the blockchain. Sadly, I cannot find where it is located. I have ...
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2answers
227 views

Removing Bitcoin from my phone to secure storage

I am using the following Bitcoin wallet for Android: https://github.com/bitcoin-wallet/bitcoin-wallet My device is encrypted and I have encrypted backup files on Google Drive. However, I'd like to ...
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2answers
4k views

How can I recover my MultiBit HD wallet words?

I have problem with MultiBit HD. Its balance changed to an unconfirmed transaction just like in this bug report. It appears that I need to use my wallet words to recover the balance, but I have lost (...
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2answers
364 views

What would happen to my bitcoins?

I have a Bitcoin wallet for android and I would like to know what happens if I back up the wallet and restore it in other phone. Will I be able to use the bitcoins in both devices? Thanks in advance
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1answer
47 views

Move BC before/after reformatting

I plan on reformatting my main drive. I did this once before and of course lost access to my Bitcoin Core wallet and the Bitcoins therein. Does anybody know how I can go about transferring my ...
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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 ...
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2answers
1k views

Bitcoin Core 0.13 BIP32 support

BitcoinCore 0.13 now supports BIP32 wallets. Documentation states, that if I create a new wallet and encrypt it, it will be an hd wallet. Then I can make a one-time backup of the master secret key. ...
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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 ...
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0answers
494 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?
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1answer
583 views

Are multibit HD (or other no web wallet) and Blockchain.info wallet words compatible?

Well the title says it. I tried to enter blockchain.info seed words into multibit, but it doesn't seem to be working. So what I'm trying to do is to have multibit (or other) alternative of my ...
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1answer
568 views

Is the mnemonic passphrase enough to backup with deterministic wallets?

I'm using a greenaddress.it wallet, but assume this will be the same for all deterministic wallets. (If not, please correct me!) Since the first and all further bitcoin addresses my wallet will ever ...
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1answer
288 views

What if I backup my wallet from a client that is not fully synced with the blockchain?

I've just backed up an encrypted wallet, but the client (Bitcoin-Qt) is 26 weeks behind. During these last 26 weeks this wallet has only received BTC (roughly one transaction per day), no payments ...
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1answer
257 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?
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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,...
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0answers
206 views

bitcoin-qt restored wallet.dat all synced closes after correct passphrase "assertion error crypt" HELP

Installed bitcoin-qt and replaced new wallet.dat with old wallet.dat backup Opened bitcoin-qt and let it sync and all blocks synced and wallet has correct funds and past transactions. I Want to ...
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1answer
118 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
5k 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
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 ...
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3answers
800 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 ...
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1answer
73 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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1answer
643 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 ...
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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 ...
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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: ...
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1answer
91 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
52 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?
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1answer
3k 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
493 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 ...
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2answers
320 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 ...