Questions tagged [electrum]

Electrum is a lightweight Bitcoin client written in Python

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4 answers
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How to unstuck a low-fee transaction with Electrum?

I've sent a transaction with Electrum, but accidentally included too little fee. What can I do to speed up the transaction's confirmation or to replace it? This is a complementary question to Why is ...
Murch's user avatar
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17 votes
5 answers
28k views

How can I transfer a Bitcoin-qt wallet to Electrum?

I am switching from bitcoin-qt to Electrum, and it seems as if I will need to download the blockchain again. Can I copy and paste my wallet.dat into Electrum's files?
tom's user avatar
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7 votes
3 answers
14k 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 ...
John Tate's user avatar
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10 votes
1 answer
24k views

What does change address mean inside Electrum wallet?

I am bit confused with the change label that is inside Electrum Wallet . Can I receive bitcoin if i give this address which are under change label? What is the difference between Receiving and Change ...
william Henery's user avatar
8 votes
3 answers
6k views

Checking/polling a balance of an address in Electrum via the command line/RPC

Suppose, I've dynamically -- via the command line/RPC -- created an address or payment_query in Electrum. And saved its details in a database along with the amount of bitcoins I expect to receive. ...
Kolayn's user avatar
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3 votes
4 answers
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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 ...
Wizard Of Ozzie's user avatar
7 votes
3 answers
3k views

Importing private keys creates different address

How does importing private keys work? I have previously imported the private key for a 1Archive... address into Bitcoin Core and noted then it added an address like 1AXbRq... and I didn't follow it ...
Willtech's user avatar
  • 3,269
0 votes
2 answers
989 views

How to transfer from unsync'd Bitcoin core wallet to Electrum?

I would like to transfer my btc wallet to an electrum wallet. Syncing is taking to long.
requim's user avatar
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14 votes
2 answers
10k views

Are the Thin clients Electrum and Multibit safe and secure?

How do Electrum and Multibit compare for being safe and secure. Both are open source. Are there any advantages, security wise, to use one or the other? I'm new to bitcoin and the only reason for ...
cookyjar's user avatar
  • 141
12 votes
2 answers
23k 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): ...
user's user avatar
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11 votes
3 answers
11k 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 addresses?...
Nick ODell's user avatar
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10 votes
3 answers
13k views

How to restore wallet from 15-word seed mnemonic?

The wallet was created around Feb 2013, using unknown wallet software. All that is known is a passprase, and 15 words. I suspect the passphrase was used to encrypt the wallet, and is probably ...
user443854's user avatar
9 votes
1 answer
2k views

What are the security considerations for hosting *your own* Electrum server?

Lets say I wanted to use an electrum client but I'm so paranoid and also can't or won't read and understand python code so that I only trust my own server. What security considerations should I have ...
barrymac's user avatar
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8 votes
4 answers
2k views

What BIP32 derivation path does Electrum use for Multisig?

Same question as What BIP32 derivation path does Electrum use? but for multisig. thanks.
joe.js's user avatar
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6 votes
1 answer
5k views

Electrum addresses start with "b"

As far as I know, all bitcoin addresses start with a "1" or "3" prefix. I've just started using electrum wallet and all the addresses it generated had a prefix of "b", or even "bc". Is this legit or ...
Ahia Cohen's user avatar
6 votes
1 answer
4k views

What is "the gap limit" in Electrum?

I don't understand this explaination.
ripper234's user avatar
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5 votes
2 answers
12k views

What all the addresses are in my Electrum wallet?

What are addresses mean in Electrum? Are they some default/predefined/popular addresses? Are they all my BTC addresses? Can I delete them entirely? I couldn't find delete option, only freeze. Why ...
Green's user avatar
  • 210
4 votes
0 answers
5k views

Can I import my wallet from my bitcoin core for electrum? [duplicate]

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 ...
user4951's user avatar
  • 1,188
2 votes
1 answer
10k views

How can I use Bitcoin privately with the Electrum wallet and Tor?

I do not want to run a full node like Bitcoin Core but still want privacy running an SPV node like Electrum wallet to use Bitcoin. How can I setup to run Electrum privately with Tor?
Willtech's user avatar
  • 3,269
1 vote
3 answers
4k views

Bitcoin Cash Multibit HD/Electrum

If I had my BTC in a multibit HD wallet prior to the fork, and I exported my wallet to Electrum after the fork, will the BCH still be tied to the multibit HD wallet? And if so, how can I access the ...
Lionel's user avatar
  • 11
1 vote
2 answers
3k views

Why I have some many address when I only created two wallet address in Electrum?

I am new to this. I have created two new wallet addresses (labeled init and init2). However, when I click "View > Show Addresses," I found a lot of addresses. Why? What do receiving and ...
AGamePlayer's user avatar
1 vote
2 answers
3k views

Can Large Bitcoin Collider break into the wallet which is created by new version of Electrum?

I have heard that Large Bitcoin Collider can only break into wallets that are created by broken software. My other question is that it seems the last private key that they found was on 2017-11-15 01:...
Iman's user avatar
  • 113
17 votes
4 answers
29k 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 ...
shx2's user avatar
  • 803
10 votes
1 answer
2k views

Bitcoin automatically diverted to bech32 address

I sent bitcoin to an address starting 3Cn using Electrum but the blockchain viewers seem to show that it has gone to an address beginning bc1 as shown in the link below. Transaction Viewer How can ...
S.Brown's user avatar
  • 115
9 votes
1 answer
3k 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", "...
electrum question's user avatar
8 votes
6 answers
24k 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 ...
Michael Baldry's user avatar
7 votes
2 answers
1k views

Is Electrum's SPV (thin-client) implementation not P2P (as opposed to Multibit's)?

As far as I know, when I use Electrum I'm just choosing servers to trust that hold the blockchain. But in this recently published article I read this about Multibit: It uses a slightly weaker ...
knocte's user avatar
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7 votes
1 answer
2k 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 ...
Mr Jones's user avatar
  • 548
7 votes
3 answers
11k 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?
Nick ODell's user avatar
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6 votes
4 answers
11k views

How do I import a Multibit HD wallet with seeds into Electrum?

I installed Electrum to replace the broken and intolerable Multibit HD. I entered my 18 seed words, but it wouldn't allow me to click Next. I clicked Options > BIP 39 and it enabled Next. It created ...
Chloe's user avatar
  • 588
6 votes
2 answers
6k views

How to do mass payouts in my application to multiple addresses at once, or very quickly?

Let's say it's pay day--I've accumulated a lot of bitcoins, and sent them all to a single address. I now want to pay a lot of addresses from this "pool" of coins, say anywhere between 100 and 10,000 ...
timetofly's user avatar
  • 201
5 votes
1 answer
3k 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 meant,...
Miles Bardan's user avatar
5 votes
1 answer
913 views

Why do we need electrs or electrumx alongside bitcoin-core?

I'm running a full bitcoin node. No pruning. Two primary use cases: Parse the most recent block and all the transactions in it Fetch any given address balance Both these can be achieved by just the ...
Ravi Ojha's user avatar
  • 173
5 votes
2 answers
5k 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 ...
Michael McGowan's user avatar
4 votes
1 answer
4k views

How can I migrate from blockchain wallet to Electrum?

I would appreciate a simple step-by-step guide to migrate from Blockchain wallet (https://play.google.com/store/apps/details?id=piuk.blockchain.android) to Electrum wallet. Presumably I would have to ...
user avatar
4 votes
3 answers
20k views

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

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, ...
RasterVector's user avatar
4 votes
2 answers
585 views

Send coins with Electrum from encrypted wallet created with Bitcoin Core

I am totally new to bitcoin. I have google'd this a lot now. I created a wallet with Bitcoin Core GUI and encrypted it (settings -> encrypt wallet...). Then I took a receiving address from the ...
gibs's user avatar
  • 141
4 votes
1 answer
26k views

How to recover an electrum wallet from seed

A service I used some years ago is shutting down. I withdrew some coin but it went to an old address. I believe it was my old electrum wallet that I only have the seed for. How to recover my bitcoin?
Eddie's user avatar
  • 193
3 votes
1 answer
1k views

Electrum Error Message "22"

When I try to send BTC from my Electrum wallet address to one of my unused addresses in Electrum, just as a test, it comes up with an error message (U'message':u'TX rejected, U'code':-22). I'm using ...
user3352's user avatar
3 votes
2 answers
4k views

How to sweep a segwit bech32 private key?

I'm testing segwit bech32 addresses and generated the following using bitcoinjs: address: bc1qc7u5njf4nf2rj3zys642mfc7nct6kdven8j4e9 private key: 5Kkzs8XrJNAmf9VQDFeGBfaRvSByAvPK6DbDXw5BVqswWaXSG2Y ...
Patoshi パトシ's user avatar
3 votes
3 answers
3k 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 ...
Firstq's user avatar
  • 31
3 votes
1 answer
8k 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: ...
user4234's user avatar
  • 183
3 votes
1 answer
3k views

How many addresses can an Electrum Seed generate?

If I generate too many, they go red for some reason. So what is the maximum amount of addresses that a seed can make?
Shamoon's user avatar
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3 votes
1 answer
889 views

Why is 'p2pkh:' prepended at the beginning of private key addresses in electrum?

I recently started a Blockchain course and came across the electrum software. While going through the list of wallet addresses and associated private keys I found that 'p2pkh' is placed at the start ...
Anshu Jalan's user avatar
3 votes
2 answers
2k views

Key pool in wallet softwares

From my understanding, bitcoind/bitcoin-qt uses a key pool for their wallet, so when you create a wallet you are actually creating not just one but many addresses for sending/receiving transactions. ...
k kurokawa's user avatar
  • 2,072
3 votes
1 answer
289 views

Can a bitcoin cold wallet become incompatible

(newby-question) If I plan to use a cold wallet for longterm storage without following the news around bitcoin and my cold wallets application does not get maintained anymore in the meantime, can it ...
Ini's user avatar
  • 45
3 votes
3 answers
1k views

Generating bitcoin wallets for my customers [closed]

I run an application written in PHP and need to add the option to buy services with bitcoins. So, for each user i need to generate a unique, unused bitcoin address. I could generate X number wallets ...
im7xs's user avatar
  • 53
3 votes
2 answers
5k views

How to convert an Electrum 12 word seed to a private key?

How can I convert an Electrum 12 word seed to a private key? I heard Electrum has a special type of algorithm where the 12 word seed can't be used on other wallet software; is that true?
Thomas G. Lau's user avatar
3 votes
1 answer
895 views

Can I use the official wallet to recover bitcoins sent to an alternative wallet?

I like alternative wallets like Armory and Electrum because they offer more features, some of which are fundamental for security and convenience. But I'm a bit worried about them not being "compatible"...
ChocoDeveloper's user avatar
3 votes
2 answers
8k views

How do I import my 12 Breadwallet seed words into Electrum?

When I write them into Electrum during the restore from seed box, the Next button is disabled.
Chloe's user avatar
  • 588