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

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Problems generating addresses using bip32

I'm trying to generate bip32 addresses using the following (the PHP version). https://github.com/prusnak/addrgen The author provides a test MPK which I can get working that looks like this: ...
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22 views

import btc electrum wallet into coinomi

can I import btc electrum wallet into my coinomi mulit-currency wallet app? They both use electrum servers and they both have seeds so it looks like they are a similar kind of wallet. In electrum I ...
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17 views

Electrum 2 validation: how is the HMAC always 01…?

Electrum version 2 creates a seed from a random number which is then encoded as a mnemonic. The seed is validated by checking that the hmac begins with the bytes 01 or 101 for standard and 2fa types, ...
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73 views

How to check BTC transaction when buying face to face?

I have never bought bitcoins face to face. Don't have iphone/ipad and therefore I would need answers on the following question: What do I need to have on my cell phone in order to provide seller my ...
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1answer
43 views

How does Electrum make a keypair out of a seed?

Electrum uses a seed of 12 words to generate a keypair and then hierarchically generates addresses out of that keypair. I know how to generate hierarchic addresses from a keypair, but what I don't ...
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36 views

How do you sign raw transactions with the electrum command line?

Bitcoin-cli has a signrawtransaction command. Electrum does not, but it does have signtxwithwallet and signtxwithkey. Which one of these can I use to sign a transaction? Also, signtxwithkey accepts a ...
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35 views

Electrum - Why do I have to Restore every time I use it?

I did not forget my password. I have been done dozens of transactions with Electrum, and every time I try to send bitcoins, I get "Invalid Password". So I restore from seed, set a new password, use it ...
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1answer
52 views

electrum - how to rename automatic a new wallet?

I am looking for a possibility to rename automatically new wallets. my problem is that when I restore a wallet by terminal I get this error: "Remove the existing wallet first!" But if I rename the ...
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38 views

electrum CLI - 'daemon is not connected'

I installed Electrum on my Raspberry Pi. Then, I ran electrum create to make a wallet. Then, I ran electrum daemon start to start the background process. I'm currently trying to query the balance ...
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2answers
69 views

How can I run an Electrum console command from outside Electrum (in Linux)?

I want to use my electrum wallet balance in my another python application. How do I make a call to the getbalance() function?
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67 views

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
41 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
96 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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28 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.
3
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1answer
124 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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35 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
147 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
104 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
36 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
48 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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55 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 ...
3
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1answer
152 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!
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1answer
170 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 ...
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1answer
88 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
129 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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74 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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95 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
822 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
50 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 ...
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3answers
445 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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41 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
125 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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35 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
134 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
346 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
323 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
294 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
140 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
252 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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262 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
175 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
115 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
296 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
330 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
135 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
565 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
819 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
218 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 ...
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2answers
465 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 ...