Electrum is a lightweight Bitcoin client, based on a client-server protocol.

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How do I view the extended public key in Electrum?

Someone's asking for my extended public key. How do I view this? What are the consequences of giving this to someone? Can they steal my Bitcoins if I give this to someone?
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1answer
11 views

What BIP32 derivation path does Electrum use?

Electrum 2.0 and up uses BIP0032 internally. I want to write code that generates the same addresses. I can't find any information about this online. What BIP32 paths does it use to generate ...
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3answers
48 views

Electrum 2.0: non-BIP39/32 standardisation complicates matters immensely. Why?

Electrum 2.0 has been causing me some frustration, insofar as it seems to be a non-standard implementation of BIP32/BIP39 (HD wallets, mnemonic seed, respectively). The wallet in question is a 2of2 ...
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0answers
21 views

Is it possible to import transaction history from an old electrum wallet to a new electrum wallet?

I see there is an option to export history but no option to import history. It would be nice to keep all my history in one wallet. Thx.
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1answer
81 views

Why are Electrum 2.x mnemonic sentences thirteen words long?

The 2.x version of Electrum uses mnemonic sentences that are 13 words long. However, 1.x versions use a sentence only 12 words long. I realize that 2.x changed the derivation of key pairs ...
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0answers
28 views

Why is “New Account” grayed out in Electrum?

When creating my wallet, I chose the options "Create new wallet" and "Standard wallet." I think this is a BIP32-based wallet. As you can see in the screenshot below, "New Account" is grayed out. Why ...
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1answer
78 views

Can I import my wallet from my bitcoin core for electrum?

Bitcoin-qt, now bitcoin core is insane. It consumes 40GB hard disk space. It hogs network. I am thinking of using Electrum or something like that. I want to use another bitcoin client. Electrum is ...
1
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1answer
74 views

Using Armory Watch-Only wallet in Electrum?

Is it possible to import a Watch-Only wallet that was made in Armory into Electrum? I like to use Armory for cold storage but like Electrum more for hot wallets because it's lightweight and you never ...
2
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1answer
33 views

Electrum Wallet - Is it possible to specify inputs in new transaction?

In my wallet, I have bitcoins belonging to three different addresses. I want to send the bitcoins from one of those addresses elsewhere. This is made easier, perhaps, by the fact that the balance of ...
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2answers
43 views

Electrum: seed is 0 length / empty

I installed electrum a while back and noted down the 12 word seed. Haven't used it for a few months, but now when I go to view my seed (clicking on the seed icon on the bottom right of the GUI), it ...
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0answers
46 views

Downloaded electrum, restored an old wallet, now BTC are stuck. How can I get them out?

How can I send them or reset password? Everytime I try to send it says invalid password. I tried by a couple different ways without luck. I deleted the wallet. Then I downloaded again and created ...
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1answer
113 views

Electrum wallet - Can not send bitcoins

Does anybody know what this code means? error: {u'message': u'64: dust', u'code': -26} I've managed to send bitcoins once, same settings, but it only worked once. Any help is welcome, thanks!
2
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1answer
138 views

What does it mean when addresses are labelled “beyond the gap limit (highlighted red)”?

There is a lot of red highlighting in the 'Label' column of my online/watch-only Electrum client, including for addresses which contain considerable balances. After trying to find out what this ...
2
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1answer
70 views

How to recover a deterministic wallet offline?

I know that in the case of electrum there is a gap limit and it will keep generating addresses until it finds a number of consecutive empty addresses equal to the gap limit. What about if I want to ...
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1answer
106 views

Some newbie questions about bitcoin transactions and anonymity

I am totally new to the Bitcoin thing and have installed Electrum yesterday after having read a lot of reviews on different local wallet options. I am not really planning to use it yet, but I want to ...
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1answer
56 views

How do I chose the address to send to in Electrum? Can i send from a new made address with no transactions? [closed]

How do I chose the address to send to in Electrum? (for Electrum) Can the seed recovery mechanism in Electrum be bruteforced? 2.1. Since any seed makes some especial addresses (correct me if i'm ...
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0answers
70 views

Is there a way to recover the original electrum seed from the encrypted one?

So I accidentally lost my electrum seed and password, but I still have the wallet file, so I was wondering if there is a way to recover the original seed from the encrypted one? I think my password ...
2
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1answer
706 views

Can't connect Electrum to a Network so that I can receive my bitcoins

I've looked everywhere for an answer but can't find the right one for my situation. I'm using the linux based tails OS with persistent setup with my electrum wallet. Everything works fine and LBC ...
2
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1answer
48 views

Where to stop key derivation when looking at balance of a deterministic wallet

If I want to know the total balance in all the addresses which can be generated in a deterministic wallet (like electrum or armory). I have the master public key allowing me to derive an infinite ...
3
votes
3answers
379 views

Can I use my Electrum seed without Electrum?

Assumptions: I've memorized my electrum seed and will never forget it In the future, I'm robbed of everything but mind and body In the future, Electrum software is not easily accessible or I can ...
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0answers
38 views

Electrum command line: how to get the number of confirmations of a transaction

How do you get the number of confirmations a transaction has via the command line?
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2answers
120 views

What does it mean to have -1 confirmations?

I have -1 confirmations for an inbound transaction on my Electrum wallet. What does is it mean to have -1 confirmations?
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0answers
34 views

Questions about Electrum [closed]

I recently just installed the Electrum client and I have a couple questions. Is a new address generated in the receiving addresses each time a transaction is made? It sounds like that in the ...
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2answers
2k views

How do I load wallet.dat on new PC and import everything into Electrum?

My primary PC died last month due to what I believe is a motherboard error. My EVGA board displays "FF". The fans, drives, everything powers up as usual. But I don't hear any beep, no POST, no BIOS, ...
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2answers
128 views

getreceivedbyaddress without knowing the private key

Not considering any external services, is there any way (opensource implementation) that would keep up with the blockchain and expose an API with the same functionality as the original ...
2
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1answer
313 views

How to import entire Armory wallet into Electrum?

I've managed to import a private key, but how to import an entire wallet?
2
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1answer
303 views

Do electrum fully support Hierarchical Deterministic Wallets?

I'm curious if electrum fully support Hierarchical Deterministic Wallets (BIP32). I have seen in source code that some part of implementation is done. But there are also as I think some electrum ...
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1answer
277 views

Who can see my IP address while using Electrum

Who exactly is my IP exposed to when sending transactions in Electrum. I'm assuming the server operators can see it every time I connect (to query the servers about my balances). When I make a ...
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1answer
138 views

Couldn't an attacker cause online (watch-only) wallets to display malicious receiving addresses?

If I understand correctly, one of the main perks of using a deterministic watch-only wallet is the ability to generate new receiving addresses without syncing with the offline wallet, but this seems ...
2
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1answer
235 views

Is Electrum Cryptographically Secure?

Electrum seems very user friendly, thin and convenient, but is it cryptographically secure? One of the ways to attack any cryptographic system is to exploit weaknesses in the key generation ...
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1answer
211 views

More receive addresses with electrum

I cannot find any documentation or an option anywhere in the electrum client to put it into expert mode. I'm not even sure it can be done any longer, and it is important I raise the gap limit. It like ...
2
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1answer
168 views

What trust am I placing where when I use Electrum?

I have read that Electrum never is given your private keys (which makes sense), but I'm still unsure what sacrifices it makes in order to not require you to not store the entire ~14GB blockchain. So ...
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1answer
106 views

Selecting a computer for the OFFLINE Electrum Wallet

Would a Samsung Chromebook be a suitable choice to run the offline wallet??? I read that Chromebooks run a Unix based OS. (I would obviously disable networking, bluetooth etc.) Thanks
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2answers
278 views

Electrum Offline Storage - two different OS, multiple wallets

Regarding the instructions to create watch-only wallets in Electrum, I am clear on the intial setup and functionality, signing transactions, etc. but I have a few questions about going forward: Is ...
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2answers
309 views

Getting Public Key for transaction in electrum

Liberty.me has asked purchasers to all pay into a single address, but then to email the "public key" of the transaction. What is the public key of the transaction? How would you find it in Electrum?
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1answer
131 views

Bitcoin Application [closed]

I'm undertaking a Masters thesis and want to generate a wallet application for mobile devices. I do not need my application to be trustworthy or practical, simply because no-one other than me will ...
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1answer
530 views

Why can the same 12 words produce different seeds in an Electrum wallet file?

I was looking through an Electrum wallet file (from Electrum 1.9.6 for Windows if it matters) trying to understand what information was contained in it, and I couldn't initially figure out exactly ...
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2answers
778 views

Export wallet from Multibit to Electrum

So, MultiBit is not updating the transactions in my wallet, I can see the transactions in the blockchain etc, so the money is there but its just not quite working... I'm hoping to load that wallet ...
0
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1answer
204 views

Removing old public keys

I have an 'Electrum' wallet. I found some old public keys and imported them into it and then sent the bitcoins to an address in the main wallet. Now the transactions are confirmed and there are 0 ...
0
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2answers
449 views

Getting keys from multibit to export for electrum

I want to switch from Multibit to electrum. I can't figure out how to make use of the key multibit exports when it does a backup. Electrum and blockchain.info both seem to want something I can paste ...
0
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1answer
101 views

Opening Wallet with a different App

I just bought a couple of bitcoins. I got my wallet from Bitcom.org but I learned that there is this Electrum wallet which Id like to try. How do I open my wallet with the new App? thanks!
2
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3answers
100 views

Security for bitcoin businesses with Employees

Have been investigating some of the gateway apps and offline systems that are being developed. I was wondering what is the most secure way for a business to conduct itself. Let's use a bar as an ...
1
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1answer
99 views

Why am I able to export private keys using my seedless online Electrum wallet?

Why am I able to export private keys using my seedless online Electrum wallet? I thought this wallet is not meant to be able to expose any of my Bitcoin, but yet it has the option to export private ...
3
votes
1answer
900 views

How do I update offline Electrum wallet after receiving payment with Online seedless wallet?

How do I update offline Electrum wallet after receiving payment with Online seedless wallet? The guide at: http://electrum.org/tutorials.html#offline-mpk does not say. It only says how to make ...
0
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1answer
109 views

Is there a tutorial on how to set up a secure enviroment and use Electrum?

Which OS to use? How to verify that the OS is secure? How to download and install Electrum securely? There are many methods - binaries, git, homebrew, Ubuntu package, building from source. Is there ...
1
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1answer
783 views

How can I stop Electrum re-using change addresses?

I had three addresses containing BTC in my main Electrum wallet. I then performed more than three sends, to addresses not in my wallet. The first three sends used main wallet addresses to send BTC ...
2
votes
2answers
2k views

Electrum: “restoring” a wallet from a seed

Suppose I set up a wallet with a deterministic seed passphrase. I then use it, moving bitcoins around, sending some change to change addresses. Electrum will apparently create more addresses when ...
1
vote
1answer
239 views

What encryption does Electrum use for private keys in wallets?

Electrum can encrypt the private keys in wallets with a user entered password. But what encryption algorithm is used? I'd hope it is reasonably strong crypto. I've looked at the Electrum docs and ...
2
votes
3answers
441 views

How to verify that downloaded files such as Ubuntu, BitcoinQT, Armory, and Electrum have not been tampered with?

When creating a secure offline wallet, the first step is to download some software or OS (such as Ubunutu) to create the wallet. How can you verify that the software you are downloading has not been ...
2
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4answers
8k views

Offline Wallets: Electrum vs Armory?

I'd like to secure my bitcoin with an offline wallet. A lot of security conscious people seem to use Armory. I am trying to get a better understanding of the differences between these two clients. I ...