Can you Importa wallet.dat file into Electrum? : Bitcoin

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Electrum doesnt reconigze my wallet.dat (from bitcoin QT) what to do?

Guys, i downloaded electrum on my laptop and tried to import my old wallet.dat from (bitcoin QT) 2017. But Electrum doesn't recognize the file. Anyone know how to solve this f*cking problem.
Perhaps any other suggestions ?
submitted by Alauwie to Electrum [link] [comments]

What are the most reliable/trustworthy tools for creating offline text-based keypairs which do not involve javascript/browser tools, Electrum, or tools that require a file to be stored (e.g. Bitcoin Core's wallet.dat)? Thanks

I am looking for tools that will give me a public address to which I can send funds along with a text-based private key by which I can sweep the funds later (it doesn't matter if this is a string of mixed up characters or a passphrase of mixed up words). A Linux command line tool would be ideal. I would like to avoid:
  1. Javascript : I've read that JS tools are known to occasionally create invalid keypairs.
  2. Electrum : I've read that Electrum does not follow all bitcoin standards making funds hard to retrieve if support for Electrum ceases.
  3. Data files : I would like to be able to access the funds using text only, no stored files.
Thank you for any advice you can provide.
submitted by ZedZeroth to Bitcoin [link] [comments]

I had backup a wallet.dat file from bitcoin-qt before formatting my PC. But now I wanna use electrum. How do I do the transfer?

I dont wanna install Bitcoin-QT again and download the whole blockchain.
Is there a simpler way where I download Electrum and transfer those BTC from wallet.dat to the electrum wallet?
submitted by jonbristow to Bitcoin [link] [comments]

I had backup a wallet.dat file from bitcoin-qt before formatting my PC. But now I wanna use electrum. How do I do the transfer? /r/Bitcoin

I had backup a wallet.dat file from bitcoin-qt before formatting my PC. But now I wanna use electrum. How do I do the transfer? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

When installing Electrum you get an option to restore a wallet via public/private keys. Can I use this to import from the wallet.dat file? /r/Bitcoin

When installing Electrum you get an option to restore a wallet via public/private keys. Can I use this to import from the wallet.dat file? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Was using bitcoin-qt on OSX, blockchain got corrupted and now it is impossibly big to re-download, what thin clients can I import my wallet.dat into?? OSX 10.7.5. I already tried electrum and looks like I'd have to build it from github, can't figure it out. please help.

Send help! is there a safe way I could download a torrent of the blockchain? i tried to reindex the blockchain (after my harddrive got unplugged while bitcoin-qt was running) and it looks like it would literally take a week of spinning my poor laptop fan balls out.
edit: wallet.dat is encrypted and safely backed up.
submitted by sporabolic to Bitcoin [link] [comments]

uploading wallet.dat to electrum/mycelium /r/Bitcoin

uploading wallet.dat to electrum/mycelium /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Can I import my wallet.dat file from Bitcoin-qt into Electrum or some other light-weight or online wallet?

I can't get the entire blockchain on my computer, but I have the wallet.dat file from Bitcoin-qt. I'm wondering if there is an online wallet or other light-weight wallet I can import the wallet.dat file into and send my bitcoin out to my electrum wallet.
I just need to get my bitcoin out of the bitcoin-qt client with nothing but the wallet.dat file.
I'm on a mac.
submitted by xintox2 to Bitcoin [link] [comments]

I just found a copy of a long-lost wallet.dat file. Is there any way I can move to Electrum without downloading bitcoin-qt and downloading the whole damn blockchain? /r/Bitcoin

I just found a copy of a long-lost wallet.dat file. Is there any way I can move to Electrum without downloading bitcoin-qt and downloading the whole damn blockchain? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Can you Importa wallet.dat file into Electrum? /r/Bitcoin

Can you Importa wallet.dat file into Electrum? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Can I import my wallet.dat file from Bitcoin-qt into Electrum or some other light-weight or online wallet? /r/Bitcoin

Can I import my wallet.dat file from Bitcoin-qt into Electrum or some other light-weight or online wallet? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Old (2013) Electrum wallet - how to import

Hi!
I do have a very old, 2013 Bitcoin wallet in Electrum. I do have a wallet.dat and a blockchain_headers file of that date.
How can use this to restore my old wallet. Actually I am not even sure if there is something in it...
As I saw the latest Electrum version has a wallet.dat and wallet folder. This is nothing I have found in my old data.
Thanks.
submitted by Magus66 to Electrum [link] [comments]

Storing your coins safely while not risking loss of keys

This was originally an answer to a question that was asked here, but OP deleted their post.
This might help some newbies (especially the multisig edit at the end), so I want to make sure it's still accessible here.
The original question was whether the Electrum wallet stores a Trezor's private key when using a passphrase.
OP noticed that their Trezor wouldn't connect to their Electrum wallet when entering a different passphrase than they used when creating the wallet. Thus, OP (likely) assumed that the wallet stored the private key, as it somehow knew that a different private key was now used.
Here is my original answer (with some modifications):
IMPORTANT: I'm assuming here that you connected your Trezor by choosing the "hardware wallet" option in Electrum, rather than giving Electrum your 12/24 seed words.
TL;DR: No, your coins are safe :)
I'm assuming by passphrase) you mean the 25th (or 13th) word. When you have this feature enabled, a private key gets generated every time you enter a passphrase. When you enter the same passphrase you used to create the wallet, the wallet with your funds shows up.
Whenever you enter something different, a different private key is generated on your Trezor. This allows you to have multiple different wallets, for example by choosing the passphrases "First Wallet", "Second Wallet", "Third Wallet", or a secret wallet with a secret passphrase.
So whenever you enter a new passphrase when connecting your Trezor to Electrum, the Trezor will send a new public key to Electrum. Electrum will then derive addresses from this public key and check those for balances. It won't find any, as you used a new passphrase.
EDIT: I just realized that you said your wallet doesn't connect to Electrum when you use a different passphrase. This is simply because Electrum doesn't receive the correct public key from the Trezor and therefore Electrum thinks it's a different wallet (which it is).
When you enter the passphrase you used during creation of your wallet, the Trezor will send your actual public key to Electrum, which will then find addresses with balances, which it will show to you. EDIT (to clarify): Connecting your Trezor after creating the wallet is only necessary to send funds or verify addresses, as the public key is already stored in the wallet.dat.
The only thing Electrum actually stores is the public key, which can only be used to look at your Bitcoin, not to move them. You might want to keep this public key a secret as well though, since it links all your funds to you. This is what Electrum stores in the wallet.dat file, which you can just encrypt by choosing a password for it.
Well done using a passphrase by the way! Should someone get their hands on your Trezor, a sophisticated attacker can get the secret key off the device in 15 minutes. Using a passphrase makes this attack almost useless, as the both secret key AND the passphrase are needed to move your funds, and the passphrase is not stored on the device. A passphrase also allows you to hide funds from potential robbers that force you to unlock your wallet.
You can do this by activating the passphrase feature and sending your funds to a wallet with a secret passphrase (do NOT lose this, as losing your passphrase renders your funds inaccessible). Afterwards, you can safely deactivate the passphrase feature, so the device doesn't even ask for one should you get robbed. Simply reactivate it when you need to access your funds.
EDIT: Should you be worried that you might forget your passphrase, you should look into multisig wallets. Depending on how you set this up, you can make it more secure against theft and less likely for you to lose access to your funds.
Say for example you get four wallets: two hardware wallets, a well-protected (airgapped) laptop with Electrum, and a secure mobile wallet that allows for multisig (like Fully Noded).
You can then create a 2-of-4 multisig wallet that requires you to sign transactions with any two of these four wallets.
The increase in security comes from the fact that an attacker now needs full access to two of your devices (or their stored private keys) at once.
At the same time, the fact that you yourself now also need access to only half of your devices means that in the event of a total loss of one (or even two) of them, you can still move your funds to a new wallet.
As long as you do regular checks (e.g. first day of each month), ensuring that you still have access to all your devices' stored private keys, you can always catch a loss of keys and fix this without losing funds (by creating a new multisig wallet and sending the funds there).
This allows you to use a passphrase on your wallets without storing it anywhere physically or digitally. This would usually be very risky, as forgetting the passphrase would lead to a loss of funds, but this risk is now close to eliminated.
(The following part was not in the original answer)
Some IMPORTANT general secruity tips:
  1. Consider including trusted friends and/or family members as co-signers for a multisig wallet. This ensures that it's not even possible for you alone to hand over funds to an attacker. Depending on your level of trust, you might want to make sure that your co-signers can't collaborate to steal your funds (if you include 3 people, create at least a 4-of-n multisig). You could also deliberately make it possible for all or even just some of your co-signers to move your funds (3 co-signers, 3(or less)-of-n multisig) to make sure your funds aren't lost should pass away unexpectedly.
  2. Consider running your own full node and Electrum server (also check the alternatives), which you connect your Electrum wallet to. This ensures that you don't send your public key to anyone else. If someone knows your public key, they know how much BTC you own, making you a potential target.
  3. Always encrypt your wallet.dat (or whatever you called your wallet file), even if it's a watch-only wallet. This protects your public key (see 1. for why you want that).
  4. Create watch-only wallets: Use an airgapped) device to create a wallet with Electrum (make sure to back up the seed phrase) and export the public key. Then create a new watch-only wallet on another device (like your everyday laptop) with that public key to be able to check your funds. To create the initial wallet, you can also use any other hard- or software wallet that allows you to export the master public key.
  5. Hide, or (when using a hardware wallet with a passphrase) even delete your watch-only wallets. Hiding your funds makes you less of a target. When using a hardware wallet, recreating the watch-only wallet is fast and simple, so you don't need to store it if you don't want to check your funds every day. Note that this approach doesn't help much when you don't use a passphrase, as an attacker will obviously check the passphrase-less wallet no matter what.
  6. Keep some funds on your hardware wallet(s). If an attackers sees funds on the wallet(s), they might not force you to enter a passphrase or ask if you have any multisig wallets (lying under pressure is hard).
  7. Hide all your wallets in different places. If someone sees that you have multiple wallets lying around, they might realize you have a multisig wallet.
  8. Don't risk a robber getting (for example) two keys to your 2-of-4 multisig wallet and then racing them to move your funds with the other two keys when they leave. They're gonna come back and be pissed. If it comes to this, you need protection until the robber is caught. STAY SAFE!
  9. The easiest way to solve a problem is to never have it. Don't make yourself a target. If nobody even suspects that you have a multisig (or any wallet at all), they're probably not gonna look for it.
Please correct any mistakes you find and I will edit my post. I will also gladly add more tips to the list. I will of course credit anyone who helps.
Tip for devs who want something cool and important to work on: Make the creation and usage of multisig wallets as noob-friendly as possible. If someone expresses worries about losing access to their funds by forgetting the seed phrase, wallet pin, etc. (someone in my family actually brought this up to me), multisig wallets are the perfect solution as they add redundancy.
submitted by Fittiboy to Bitcoin [link] [comments]

Monero GUI and CLI mnemonic backups appreciation time

Recently I was researching a little bit about how mnemonic backups work, and found this great explanation for Bitcoin's case, which also looks like a nightmare scenario, since long story short: Bitcoin Core doesn't support mnemonics and basically you are stuck with storing your wallet.dat binary, hoping for not losing it or it getting corrupted.
By contrast, both Monero Core wallets (GUI and CLI) support mnemonic backups and are compatible between each other (I just tested this to be sure, and was delighted to find this true, plus seeing how slicker the GUI looks now after quite some time without trying it out).
Yeah, you could use Electrum or some other wallet for mnemonic backups in Bitcoin, but it is just not the same level of security as using a Core wallet.
So I just wanted to take some time to highlight how much I appreciate this Monero feature.
What do you think? Am I hyping Monero's native mnemonic backups too much because I'm missing something? Or do you also think that this feature is underrated?
Edit: Just fixed the link format.
submitted by alive_consequence to Monero [link] [comments]

I found a lost bitcoin wallet from 2012

So I was going through an old laptop and found the wallet.dat file in %APPDATA%. If I remember correctly I had 0.7 bitcoins mined.
Could anyone with knowledge please help with a couple of questions?
  1. is the balance stored in the wallet itself or do you use it to download blockchain info or some such to work it out?
  2. What can I use to view my wallet? I've read that there are a few formats (Berkley, Level) depending on age. I'd love a simple C# lib or small open source exe..
  3. Is the wallet locked with a password?
A big thanks to anyone taking time to reply :)
Edit: have 0.76 bitcoin ($5k USD). Thanks to all who replied for help and thanks quarantine!
submitted by zer0ptNRG to Bitcoin [link] [comments]

[HIRING] $400 for a Bitcoin Specialist

This is not a job like others, but I'm trying to recover my bitcoins and struggle to do that as i probably messed up while backing up my wallet.

So i have a Bitcoin Core wallet.dat file. The wallet is either multisig or multiwallet(if such a thing exists).
I have written down the public and private key for these (private key beggins with an L and is 52 characters long). I dont know if it's compressed or in a weird encrypted format as it's coming from the multisig wallet.

I also have the original wallet.dat file but tring to restore it through bitcoin Core does nothing for some reason.

I've tried retreiving these funds from exodus, electrum and nothing works. I think i need to try and recover from the wallet.dat file (maybe there are other methods of doing it). I'd be happy to pay someone $400 for helping me to recover these funds.
submitted by quickQuestion12asd to Jobs4Bitcoins [link] [comments]

Restoring old wallet?

Soo, i found some old wallet files stored away. I probably hasn't anything on them, but you never know.... I downloaded Bitcoin Core and trying to check it, but it seems like i need to download the whole chainstate first, 230gb that is. i'we only progressed 25% in 24hrs, and my poor old HHD is getting hammered 100%, it probably doens't like that.
I tried getting it from this site but it seems to be dead: https://getbitcoinblockchain.com/
Any solutions? I'm currently downloading a 21gb bootstrap.dat that supposedly will get my client and wallet up to date, but dunno of that helps.
submitted by dallebull to Bitcoin [link] [comments]

Possible to restore old wallet to Electrum with .dat file?

I figured there would be tons of guides on this but I tried for half an hour but with no luck. I had an old Bitcoin Core Wallet but wanted to try Electrum on my new PC. Is there any way to transfer my funds using the .dat file to Electrum? Electrum will behave in the same way my Bitcoin Core wallet did right?
submitted by The_Austin to Electrum [link] [comments]

weird behavior of electrum+bitcoin-qt

past week installed the new plugin that allow me to connect my electrum wallet to bitcoin-core, i use a hardware wallet and worked like a charm.
Then today was updating the node and used bitcoin-qt instead of bitcoind and when was waiting suddendly i see some text in the gui where it says "recent transactions", and a lot of transactions where there.
Then was like WTF happened here, someone stole my btc?, or installed a compromised version of electrum(i use archlinux and install from the repos). Why some transactions where there, i neved imported my wallet to bitcoin-gui.
Inmediately deleted the wallet.dat and did the same in electrum, but my question is:
Was something imported into bitcoin-qt?, all my history was redeable from the gui, i never imported into bitcoin-qt, and as far i know the seed never leave the hardware wallet.
This is normal?, at least all my funds are still there but im really worried.
PS: everything happened with my hardwallet unplugged.
TL:DR: Connected my cold wallet to electrum(connected to bitcoind) past week, never to bitcoin-qt, today opened bitcoin-qt and all my history of transactions from my cold wallet(unplugged) was there(bitcoin-qt), is this normal?.
submitted by relgueta to Bitcoin [link] [comments]

weird behavior of electrum

past week installed the new plugin that allow me to connect my electrum wallet to bitcoin-core, i use a hardware wallet and worked like a charm.
Then today was updating the node and used bitcoin-qt instead of bitcoind and when was waiting suddendly i see some text in the gui where it says "recent transactions", and a lot of transactions where there.
Then was like WTF happened here, someone stole my btc?, or installed a compromised version of electrum(i use archlinux and install from the repos). Why some transactions where there, i neved imported my wallet to bitcoin-gui.
Inmediately deleted the wallet.dat and did the same in electrum, but my question is:
Was something imported into bitcoin-qt?, all my history was redeable from the gui, i never imported into bitcoin-qt, and as far i know the seed never leave the hardware wallet.
This is normal?, at least all my funds are still there but im really worried.
PS: everything happened with my hardwallet unplugged.
TL:DR: Connected my cold wallet to electrum(connected to bitcoind) past week, never to bitcoin-qt, today opened bitcoin-qt and all my history of transactions from my cold wallet was there(bitcoin-qt), is this normal?.
submitted by relgueta to Electrum [link] [comments]

Just to let any new people to the game know. Stay away from blockchain wallet.

I invested in BTC a number of years ago, and now i cannot access my wallet for over a month. My password would not work, so used my seed key to change my wallet. Successfully done that but now cannot access either wallet. Just get a pusling white circle on the log in button.
I thought it may be the site that is down or something, so set up a completly new empty wallet to see if i could log in, and can. But still after a month of trying cannot access either wallet where i think my BTC is stored.
I've tried contacting their support numerous times and they never reply. I've even joined Twitter to contact @AskBlockchain their official Twitter support. The only interaction i've had from them is that they followed my twitter account but never answered my pleas for help
submitted by KungFuSue to Bitcoin [link] [comments]

Air-gapped z-addresses; Is ZecWallet an option?

I've heard of Zcash for a while, but it wasn't until recently that I tried my hand playing around with the daemon and wallets.
Obviously, there's no point in using ZEC if you're only using t-addresses, but my desire for a z-address capable wallet certainly narrows the choice of wallets available to me.
Running a full node is no problem for me; I'd like to take advantage of a GUI if possible though. For that reason, I am drawn to ZecWallet's full node version. But I'm still uneasy when it comes to key security. (Can anyone share their experience with the ZecWallet paper wallet generator?)
From what I gather there is no wallet with HD support for t-addresses, is that right? Not much of a concern for me because I am interested in the shielded pool. I just figured t-addresses would support Electrum-style seeds but apparently not?
Sapling addresses seem to be exactly what I want; in particular I am drawn to their reusability and ability to export the view key. I was hoping this would ease the process of securing and backing up my private keys.
Here's my key handling protocol I use for Monero:
1) Generate the wallet on an air-gapped machine
2) This gives you a mnemonic seed. I write that down and keep it as an analog backup. By using a passphrase in conjunction with the seed, I can effectively encrypt this paper wallet easily.
3) Export the private view key and address to an online machine and make a watch-only wallet. This lets my watching wallet see incoming transactions
4) When outputs are received, I have to export the list of outputs to the air-gapped machine. The air-gapped machine uses this data to make signed key images.
5) I export the key images back to the watching wallet. At this point, the watching wallet can see outgoing transactions.
6) Now I can create unsigned transactions with the watching wallet, sign them in the air-gapped machine, and transmit them via the watching wallet using my full node.
The major benefit of using Monero in this way is that I only have to make a human-readable backup of my wallet once and I'm set for life.
Obviously, Zcash is going to be a little bit different. Since the core client doesn't give us mnemonic seed phrases, that complicates backup a little bit. What's the best way to back up ZEC? If I keep an up-to-date backup of my wallet.dat is that all I need? Is there an option in the wallet to encrypt this backup as well, or do I need to accomplish that externally with the likes of Veracrypt? I must admit the idea of unencrypted wallet data being written to my disk makes me uneasy.
I see that there is an option in zcash-cli to import/export the view key of Sapling addresses. However, I can't see the option to do so in ZecWallet, and when I do so manually via the CLI nothing seems to be reflected in ZecWallet.
Is ZecWallet by its very nature an obligatory hot wallet, or am I missing some functionality in the wallet?
My end goal is to run a ZEC full node on Qubes and hold my coins in z-addresses. Qubes allows me to make virtually air-gapped VMs to greatly simplify key management.
So for example when I use Bitcoin, I have a networked VM that runs a Bitcoind + Electrum Personal Server + Electrum Wallet stack, where I import my master public key. When I need to sign a transaction, I spin up a networkless VM equipped with Electrum and my private keys. Qrexec let's me easily ferry unsigned/signed transactions back and forth between the two VMs. Overall this provides a decent UX with above-average security and privacy. I'd like to port this general setup to Zcash.
To do so, I need a GUI wallet that supports both z-addresses and public/private key splitting. Does such a tool exist? (Can Electrum Personal Server be ported to ZEC?) If not, how can I streamline this process with the CLI?
I'm more familiar with Monero than Bitcoin, so the Zcash/Bitcoin CLIs are still a little foreign to me, though I am not "afraid" of CLI wallets in general. My Cryptonote muscle memory makes me prone to annoying little syntax errors I'd much rather do without.
My plan is to buy ZEC from Coinbase Pro, withdraw to a t-address, and then sweep my coins to a z-address. I want to monitor the balance of both t-addresses and z-addresses (and later send transactions) without ever exposing my private keys to the Internet.
However, it seems like the Zcash CLI is my only viable option for z-address watching wallets. Should I just play around on testnet until I get more familiar, or is there a GUI wallet solution out there that fits my needs? Does anyone have a cheat sheet for doing this via the CLI that could help me along the learning curve?
TL;DR New to Zcash, need advice as it relates to wallet backup, watching wallets, and z-addresses.
Assistance is much appreciated!
Edit: I don't suppose there's a way to use a Trezor Model T with a full node and or z-addresses?
submitted by spirtdica to zec [link] [comments]

Hoe je een Bitcoin wallet in Electrum maakt? How to - Set up an Electrum Bitcoin Wallet [April 2020 ... Sicheres Bitcoin Wallet erstellen - Schritt-für-Schritt ... Bitcoin Wallet erstellen (Electrum) How to restore a Bitcoin wallet

This guide is intended for former users of Bitcoin Core who wish to very securely transfer Bitcoin from an archived wallet.dat file into a new secure storage target (e.g. hardware wallet) using a process that keeps all private keys off of any online computer.. WARNING. Before reading this page, users should note that directly manipulating ECDSA private keys is dangerous and can result in ... That is a feature not many other Bitcoin wallets are willing to offer, and part of the reason why the Electrum wallet is so great. But to understand how you get to do that, and to harness the full potential of the wallet, you must first understand how it works right down to the very basics, and also take a look at the step by step procedure which you can use to buy cryptocurrencies for yourself. Electrum Bitcoin Wallet. Impressum This website is hosted by Electrum Technologies GmbH Electrum Technologies was founded by Thomas Voegtlin in 2013. Its mission is to develop, package and distribute Electrum software, and to provide services to Bitcoin users and businesses. Create a new Electrum wallet, select "Import Bitcoin addresses or private keys", convert your keys according to the rules available by clicking on "Info" button (you may not need to convert if your wallet.dat is quite old) and you're good to go! The above is tested on Bitcoin Core 0.20.1 and Electrum 4.0.2. 6. Conclusion. Electrum is a great, fast, secure and stable wallet, however, it is not suitable for beginners. The wallet enjoys massive support from the Bitcoin community and is extremely feature rich. If you’re just starting with Bitcoin I wouldn’t suggest this wallet, but if you know your way around the basic terms, Electrum is highly recommended (hey, I use it myself).

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Hoe je een Bitcoin wallet in Electrum maakt?

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