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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Bitcoin Core Offline Reinstallation

It is possible to reinstall Bitcoin Core Offline? I copied all the files to my external HDD. I use Ubuntu. Thanks
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Are there limits to number of attempts at entering a passphrase in bitcoin qt

I have 2 wallet.dat backups from 2013 I am having trouble with accessing due to incorrect passphrase Is there a limit to the number of attempts I can try to get the passphrase.
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Do I have to backup ~/.cashu/wallet/wallet.sqlite3 of my nutshell wallet in order to backup my ecash tokens?

Upon inspection with sqlite, wallet.sqlite3 has following tables: balance dbversions keysets proofs seed balance_used invoices nostr proofs_used. As a wallet holder, do I need to back up the file ...
1 vote
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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 ...
1 vote
2 answers
169 views

What if I delete the wallet file but still have my private key

I am just trying to learn more about bitcoin. My question is what if i delete the wallet file from my computer but I still have my private key, still I be able to access my wallet?
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Electrum Wallet Backup and Restore process

I guess I have misunderstood something somewhere, because this process isn't working quite as I expected. I had electrum on one laptop which I am about to reset, but before doing so, I wanted to be ...
2 votes
1 answer
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How can I recover a Core Lightning node as safely as possible if the backups might be out of date?

Suppose my Core Lightning node has suffered a catastrophic failure. I have a copy of the HSM secret. I also have copies of the emergency.recover file and the backup file maintained by the backup ...
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Age OLd bitcoin core wallet ".dat or .bak or nothing or Dumpwallet .txt or dumping pywallet "recorder type wallet ??

I have one wallet.dat "or lot of wallet", but he's valids ! why, when I loadwallet or import my dumpwallet file, My bitcoins... With old age, on old wallet bitcoin-qt (bitcoin core) version ,...
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'lightningd.sqlite3' and 'emergency.recover' are binary files, why use diff then?

It is written in the documentation for core-lightning: Copy the contents of the $LIGHTNINGDIR to the BTRFS mount point. Copy the entire directory, then chown -R the copy to the user who will run the ...
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1 answer
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How do I backup wallet for first time

I tried to send Crypto to my brand new digital wallet. I was informed I must backup wallet first. How do I back up my digital wallet for first use?
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What are 'accounts.sqlite3' and 'emergency.recover' and why might I want to back them up?

accounts.sqlite3 and emergency.recover are created in my ~/.lightning/bitcoin when I launch lightningd - they weren't created there some years ago. What are accounts.sqlite3 and emergency.recover and ...
3 votes
1 answer
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Can 2-of-3 multisig funds be recovered without one of the xpubs?

In a 2-of-3 multisig, the address list is derived from the combination of the three xpub keys. What happens if you lose one of the keys and its xpub? Technically, you'd be able to sign transactions. ...
33 votes
1 answer
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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? ...
2 votes
1 answer
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Does bitcoin core save the seed in a brand new descriptor wallet when it gets created?

When I create a brand new descriptor wallet in Bitoin Core 24.x, does it save the seed anywhere, and if so, can I export/import it? I understand that exporting descriptors only is not the same as ...
2 votes
2 answers
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Lost wallet problem: I have a 240 byte file from a 2013 wallet. Can I access bitcoin with this?

I lost the device with my Android Bitcoin Wallet late 2013. At the time, I had stored a 'wallet backup' file. It has no extension, is 240 bytes, and begins with 'U'. With only that file, is it ...
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Descriptor Wallets are way more confusing than legacy [duplicate]

how do you dump backup into a json file? then how do you load the json file into backup? " How to create the descriptors wallet? createwallet("my_wallet", False, False, "", ...
3 votes
1 answer
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Why isn't the backed up sqlite3 exactly same as the lightningd.sqlite3?

In the backing up page of C-Lightning, it says: The main and backup files will not be identical at every byte, but they will still contain the same data. Is there any specific reason this happens? ...
5 votes
3 answers
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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 ...
2 votes
1 answer
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Is spitting a BIP39 seed phrase in half meaningly less secure than splitting the entropy in half?

One way to create a distribution, 2-of-3 backup of your seed phrase ABC is to store the following in three separate places: AB BC CA Any two of these lists is sufficient to reconstructed the entire ...
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Easier way of backing up/remembering a bitcoin private key

This is a bit of a general question, knowing already of HD wallets and the mnemonic system for creating, backing-up and using the bitcoin blockchain. However say you have for example a cold/paper ...
1 vote
1 answer
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How does bitcoin wallet's backup restore forwarding transactions?

I've installed bitcoin wallet on my phone and had some transactions. I backed up my wallet and after backing up did some other transactions. I supposed that the back up just would restore my wallet ...
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3 answers
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 ...
2 votes
3 answers
606 views

Paper backup of Core descriptor wallet

As I understand it, using dumpwallet for a non-descriptor wallet in Core will give you the wallet seed in WIF format. This seed can then be used with sethdseed in a new wallet, thereby recovering the ...
2 votes
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Bitcoin core imported wallet

I have a friend that has an issue with his core: He generated a wallet with coldcard, imported in bitcoin core.. received on both bech32 addresses and nested ones. Lost access to that pc and now when ...
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Would it be possible to not be able to send funds from a wallet?

I was reading this blog post by Jameson Lopp on the best practices to back up a seed phrase https://blog.lopp.net/how-to-back-up-a-seed-phrase/ In the "Test your backup section", he wrote: &...
1 vote
3 answers
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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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1 answer
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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 ...
1 vote
1 answer
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BIP85: Is the list of mnemonic sentences deterministically ordered?

There aren't many working implementations of BIP85 yet. Ian Coleman's, Grondilu just added support to their Bitcoin Bash Tools, COLDCARDwallet, AirGap Vault and the Python demonstration library https:/...
3 votes
1 answer
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Restore blockchain.com wallet(s) in case the company goes away?

So I have some funds on an blockchain.com wallet. Actually it's multiple wallets (some ETH, some BTC) I followed the backup procedure and wrote 12 English words on a sheet of paper. There is an answer ...
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1 answer
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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?
1 vote
2 answers
1k views

Software wallets and what happen if you break your computer

I've been reading about wallets, web wallets, software wallets, hardware wallets...and there is one question that I could not clear up from other threads: Your bitcoins are stored in the chain. Use ...
0 votes
1 answer
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Replicate bitcoin core for backup

I want to know if possible to have the same bitcoin core and his same wallet running at the same time in two different machines, can I use the same RPC user/pass, I have o machine running but I want ...
6 votes
2 answers
525 views

c-lightning node backup-restore

How do I restore a c-lightning node from a backed up hsm_secret ? I have tried running lightningd by replacing the generated hsm_secret with the backed-up one. It shows no output and no channel. How ...
1 vote
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Should I use one `hsm_secret` for both the mainnet and the testnet?

When I launch lightningd it generates hsm_secret in ~/.lightning/bitcoin whereas launching lightningd with network=testnet generates hsm_secret in ~/.lightning/testnet. These two files seem to be ...
2 votes
2 answers
6k views

Access Bitcoin Wallet with private key

3 years ago i bought a little bit of Bitcoin. Today i found the private key of my wallet. But I cant access it, I need these 12 words (backup) I dont have. Why cant I access my Bitcoin Wallet with ...
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1 answer
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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 ...
1 vote
0 answers
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Is it doable to get the private keys from a Bisq wallet?

I do not mean getting the seed phrase - this I've already backed up. I do not see such a possibility from Bisq's GUI. Is it doable to get the private key of a particular address of a Bisq wallet (much ...
0 votes
1 answer
451 views

How to create a physical/paper backup for bitcoin-core wallet?

I am using bitcoin-core for my offline storage. In electrum I can do a paper backup by writing down the mnemonics. bitcoin-core seems to be using a different mechanism to generate the wallet. What I ...
1 vote
1 answer
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How to share your wallet key/seed in case you are hit by a bus

This very useful answer says: Share overlapping parts of your private-key or seed phrase with several family members with instructions on what to do if you are hit by a bus this afternoon. This ...
8 votes
2 answers
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 ...
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Unuseful backup

I know wallet.dat needs to do back up every time after I am going a transaction, 'because the backup will become unuseful. After what else cases do I need to do backup again? What cases do my last ...
6 votes
2 answers
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 ...
1 vote
1 answer
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View backed up wallet.dat using sqlite browser

I backed up my wallet.dat using the command as mentioned in the api ref: bitcoin-cli -rpcport=18332 -rpcuser=user -rpcpassword=password backupwallet "/bitcoin/backup.dat" I would like to ...
2 votes
1 answer
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How do non-deterministic wallets violate the principle of address reuse?

In chapter 5 of Mastering Bitcoin, Andreas writes: "The disadvantage of random keys is that if you generate many of them you must keep copies of all of them, meaning that the wallet must be backed up ...
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What does the Bitcoin Core wallet backup do?

I set a password to encrypt my wallet, all good. But I can't seem to backup my wallet. I try and nothing happens. Does the backup function give me keys or the seed words?
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1 answer
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What software can I use to calculate my private key from a seed (e.g. Trezor or Ledger)?

I want to make sure I can use my seed from Trezor or Ledger (or others) in a backup process without using an actual Trezor or Ledger to do it. I have to find out my private key. I probably also need ...
2 votes
1 answer
968 views

What happens if the Exodus company and servers shut down?

I am reasonably confident about the security of my Exodus wallet, i.e. no one's going to steal my coins (not easily), however I can't get the following around my head... What happens if Exodus and ...
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1 answer
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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 ...
13 votes
5 answers
14k 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, ...
3 votes
2 answers
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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 ...