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

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Error - Electrum RPC methods not supported

I install Electrum under Linux. sudo apt-get install python-qt4 python-pip sudo pip install https://download.electrum.org/2.6.4/Electrum-2.6.4.tar.gz After this i run daemon on port 7777: ...
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Generated a transaction id but not seen on blockchain

Transaction id: a667e6d1a80c17bd0b55afec7c6ec618ca64a2a6c1b4f9badaf1c883bf5cb5dd I sent bitcoin from electrum wallet with a 0.002 miner fee but it is showing unconfirmed. I tried to manually ...
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18 views

Set a single trusted peer in Electrum bitcoin wallet

I've running an instance of bitcoin core on my server. with the "Bitcoin Wallet" Android app it is possible to set this server as trusted peer. The wallet only connects to this bitcoin-peer. Is it ...
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Safety differences between full wallet encryption and only encrypting the private keys?

I'm a newcomer in the Bitcoin world and I wanted to ask the following questions regarding wallet security: What are the safety differences between fully encrypting the wallet.dat file and only ...
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1answer
22 views

Electrum and public note

Is it possible to attach a public note to transaction using Electrum client, if yes so how ?
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1answer
40 views

Create raw transaction in python

I have a private key (raw + WIF) and I want to send all funds from that address - fee to another address. Is there a raw python function that can do that for me ? I will broadcast the tx manually. ...
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2answers
53 views

Migrating from Electrum => Bitcoin core

Seems that many people become scared as soon as they seen 1 week or over and discover they've to download the full blockchain(ca. 60 GB now required), so it's full of question about migrating from ...
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32 views

Electrum - Setting up a server - Problems!

So im trying to request payment through my website but having problems. Im using Windows 7 x32 as a testing environment. I installed Electrum via the installer and not the standalone exe. First ...
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1answer
59 views

Can one receiving address from my Wallet be linked to another from the same Wallet?

I have created a wallet using Electrum. Electrum creates 20 receiving addresses. My question is can these be linked or traced back to each other? I want to understand if I have create another wallet ...
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1answer
52 views

Funds still showing in old Armory wallet/address after being sent+confirmed to new Electrum one?

I'm having a bit of an issue that I'm sure someone more knowledgeable will be able to clarify. I've had an old wallet using the full node client "Armory" for a few years, with 0.2 BTC within that ...
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73 views

Electrum wallet giving dust error even for larger amount

I have used this wallet sever times before to send or receive. I closed, downloaded and tried again to send to multiple addresses. Error message: http://imgur.com/Om2Dqyi
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1answer
136 views

Able to send 0.2BTC from old to new wallet w/o fee as of 2016?

Good evening everyone. I've been out of the cryptocurrency scene for a couple of years and I've stumbled into a minor issue. I've been trying to figure out if it will be viable to move some Bitcoin ...
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67 views

How to create a partial signed multisig transaction with pybitcointools (Electrum)

Looking to create a partial signed transaction with pybitcointools that is recognized and accepted by Electrum GUI client. I have tried to do so for a 2 out of 2 multisig transactions, but so far ...
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1answer
181 views

Electrum wallet shows zero balance

I sent bitcoins to an offline (air gapped) electrum wallet. I have blockchain.info proof the transaction took place and verification of the balance in the wallet (i used a watch only address to view ...
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19 views

Simulating -walletnotify option in Electrum

When run in daemon mode, bitcoind accepts a parameter -walletnotify=<cmd> which runs <cmd> whenever a wallet transaction changes due to sending/receiving. Is there a similar feature in ...
2
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1answer
73 views

Electrum: seed is 0 length . Lost seed

Its been months since Ive used my electrum wallet. When I try and send coin I get an invalid password message. Then when I go to my seed, I type in that same password and it takes me to the seed ...
2
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1answer
50 views

What does blockchain.address.listunspent exactly return?

I am building a simple application that allows user to create and broadcast spend transaction by providing a private key to get funds from and a BTC address to send those funds to. The application ...
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1answer
48 views

Is there a working, functional, maintained way to accept bitcoins through a Wordpress site to an Electrum wallet?

I know that there is the Bitcoin Payments for WooCommerce, but it hasn't been updated in over and year and doesn't support the latest version of Electrum MPK. It only supports Electrum 1.9.8 MPK.
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1answer
169 views

How to secure my Electrum wallet?

What I did is put a password on word document and put the seed words in there and then put the file in google drive. I can't think of any way I can lose it. I can't think of anyone stealing the money ...
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1answer
272 views

Why I am not seeing received money in my electrum?

The manual said that it will show up on history. Status: 0/unconfirmed, broadcast through 4 nodes Date: 10/26/2015 18:21 To: 19pHw8gbRP596CbiDdjNQbBrddAgQJ8pK2 Debit: -0.00956976 BTC Transaction fee: ...
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112 views

blockchain.info says transaction is complete but electrum dosnt show it

https://blockchain.info/address/12tFogx4zzsZzCwWAXfb36gaPHkt3FNU3P?filter=5# is the transaction page for my wallet address help? i just got $9 and i want it in my wallet but its not there (its almost ...
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2answers
129 views

Wouldn't bitcoin benefit from distributing partial blockchains over each node?

Why doesn't each node store only a portion of the blockchain? For example, if you had 100 nodes, each node would store 10% of the blockchain. This would amount to significant overlap of each aspect ...
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1answer
74 views

How do I get merkle branches using the Stratum protocol?

I need to get the merkle branch quickly for a known TX. I have connected to various stratum servers, but whenever I send the method below I get "HTTP code 405 - Method not allowed". { \"id\": 1, ...
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2answers
172 views

When are multiple transactions spending the same output in the same block considered a double spend?

Here is an example of multiple transactions in the same block, all spending from the same output. I created these using the Electrum wallet, telling Electrum to spend a little bit of the BTC from the ...
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244 views

How to create the same (2 of 3) multisig adresses as electrum's multisig wallets with createmultisig?

Looking to create 2 of 3 multisig addresses with the electrum console with public keys (not the master public keys): electrum createmultisig 2 '["1st public key wallet 1", "1st public key wallet 2", ...
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1answer
91 views

Is Electrum's label sync a decentralized service?

I have some questions about the electrum tool plugin "label sync". How does it work? I had a look into in the QA's here how electrum server/client do work, the random server setup sounds quite ...
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1answer
345 views

Generate addresses without private key: Stealth addresses vs Master Public Key

In my case a store owner has different POS terminals. On none of the terminals should be a private key stored! The owner has one wallet, where he wants to get all transactions aggregated, done on the ...
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1answer
482 views

How to buy bitcoin online and then store it on my desktop wallet?

Based on popular recommendations, I have started with Electrum as my Ubuntu desktop wallet and Coinbase as the way to buy bitcoin online. However, it doesn't seem like there is an easy way to ...
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1answer
188 views

Restore Seed with Password

I am running Electrum 2.3.2. I had 2-factor authentication enabled with Google Authenticator, but then got a new phone. I know the password to the wallet but do not have the 2-factor code anymore. I ...
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2answers
342 views

Is 12-word seed phrase safe enough?

Is 12-word seed phrase (as used by Electrum for example) safe enough for generating an offline wallet? My understanding is this: 2048 words pool make 11 bits of entrophy per word. 12 words in seed ...
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35 views

Electrum + Trezor - Rename address labels only allows one label to be defined

Using Electrum 2.3.3 on Ubuntu 14.04.2 with a Trezor (firmware 1.3.3), I'm having trouble with the account labels. When I rename an account, it displays the new label. However, when I rename another ...
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Does the electrum client decide the best chain on the basis of how much work was done, or how long the chain is?

Bitcoin Core compares blockchains based on how much work they contain, and not necessarily which one is longest. This is useful for preventing time warp attacks. This comment on HN says that the ...
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178 views

how do I send my imported wallet on electrum

I have been able to transfer my bitcoin to electrum but am facing hard time to pay it or send my coins. A form appear and I fill out and there is only two option to choose to click create unsigned ...
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How do I transfer my wallet from bitcoin qt to electrum without downloading the whole blockchain? [duplicate]

I made a big mistake: I downloaded the bitcoin qt wallet without downloading the blockchain, but I generated an address to send bitcoins to this wallet. And the blockchain says that I received some. ...
2
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1answer
129 views

Ramifications of creating Electrum 2.x seeds which are not BIP39

Electrum 2.0 seeds (mnemonic phrases) are created with a checksum based algorithm (such that the hmac_sha512 starts with 01. It's usually a 13 word seed, but can be 12 in some circumstances. If all ...
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1answer
53 views

Where could I post an article about Electrum to get it reviewed?

I am writing a short, basic article about Electrum. I am quite new to bitcoins, and was hoping I could get somebody to have a look at it, to check that I didn't write anything totally stupid (which ...
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1answer
535 views

Electrum 2.x sweep feature

Could some explain how Electrum sweep feature works? As I understand "sweep" can be used only after importing private key into wallet. But private key can't be imported into deterministic Electrum ...
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1answer
67 views

Electrum server over http

Is it possible to communicate with an electrum server using http? I'm interested in building a browser extension. I also see this message on the electrum chrome plugin Unfortunately, all public ...
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153 views

Installing Electrum on a cold wallet linux usb

I don't usually use linux but I'm looking to start using it more, if I can just figure out how to do anything. . . I'm using Ubuntu on a usb, I've downloaded Electrum (from the site since I couldn't ...
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1answer
2k views

How do I create a new address in Electrum?

In Electrum, there is no "New Address" button to be found. I tried under the tab Addresses, but nothing there. If I go to Console and try create(), then it returns: Traceback (most recent call last): ...
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171 views

Having problem implementing Electrum's BIP32 Key deriviation path

I'm trying to create a BIP32 storefront that uses Electrum's key derivation path. The user passes me their MPK, and with every order I generate a new address based on the MPK. I'm able to generate ...
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1answer
167 views

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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1answer
169 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 ...
2
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1answer
39 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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2answers
182 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
412 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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126 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
228 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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273 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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674 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?