Questions tagged [electrum]

This tag should be used for questions about Electrum, a lightweight Bitcoin client written in Python

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Blocking Port 8333 and other open channels in bitcoin core

in another post someones wrote, Bitcoin nodes use to communicate with each other. You can disable incoming connections on your node if you don't like that (set listen=0 in bitcoin.conf). Now i ...
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26 views

Electrum server full node bitcoin core wallet- how to block all outside access?

i have read that with an EPS electrum server, other nodes in the network can "ping" your port , i believe the port no. was 8333. How can I for sure and for any situation block such accesses? The EPS ...
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21 views

wallet.dat on usb to electrum

I put my btc qt wallet.dat file on a USB and would like to open it on a software wallet. Preferably electrum. Is that possible? If so how? Too many problems with btc qt and takes forever to sync.
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28 views

Do you need to run own server when using a full node wallet?

Hi can you help out pls: 1) There are some full node wallets like Bitcoin Core or Wasabi. What other full node wallet apps are available to select from for bitcoin? 2) I have read about people using ...
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25 views

Question about running full node electrum wallet

can you please help: 1) How can you run a full node wallet with electrum? what do you need? Or please link me to an understandable guide for that 2) Do you have to be online always or can you set ...
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28 views

btc qt walletdump

I'd like to dump my entire btc qt wallet, while syncing, into an electrum wallet. I don't want to do it receiving address by receiving address. I already emptied out all my receiving addresses but ...
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btc qt syncing but taking to long/dumpwallet debug console problems

Would like to transfer my btc qt wallet to electrum but having difficulties. My node is currently syncing Tried emptying out receiving addresses and was successful but there are still more coins in ...
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41 views

Cannot open dump wallet file (code-8)

Is anybody familiar with this problem using btc qt debug console? Would like to dump wallet and sweep into electrum.
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23 views

dump btc qt wallet and sweep into electrum

Can someone post a link or explain how to dump a btc qt wallet, while syncing. Than sweep it into an electric wallet. Have been trying to dump wallet in debug console but get a "cannot open dump ...
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16 views

Trouble dumping btc wallet

Btc is syncing and taking to long. Would like to dump wallet and sweep in electrum. When I try the dumpwallet command I get "Cannot open wallet dump file (code -8)" What to do? Do I have to stop ...
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35 views

how do you transfer your Bitcoin core wallet while syncing?

I would like to transfer my btc wallet to an electrum wallet. Syncing is taking to long.
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35 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 ...
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87 views

Not seeing deposit transaction in Electrum from BTCPayServer after invoice has been paid

I have imported my xpub into btcpayserver store and created some invoices and paid them. The btcpayserver wallet shows the balance from the invoices as having been paid. However when I look at ...
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37 views

Security trade-offs between centralized wallet system and a SPV wallet?

there are many wallets on the market. And I would appreciate if someone can clarify the key technical security advantages or disadvantages when using a SPV wallet vs a centralized wallet. I am ...
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Why do the xpubs from electrum and trezor not match when creating a multisig wallet?

For a little background, I am trying to set up a 2-of-3 multisig wallet with 2 trezors and a coldcard. I am trying to verify that my setup is correct before putting any meaningful amount of money in ...
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35 views

transfer btc core wallet to electrum

I am running a btc node and it is taking too long to sync. Is there any way to transfer the wallet to an electrum wallet? If so how? 1)Upgraded my btc node 2)Syncing 3)Transfer receiving addresses ...
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76 views

Is it possible to use Electrum to create a multisig wallet with a trezor and an airgapped coldcard?

I set up a 2-of-3 multisig using Electrum, a Trezor, and a Coldcard. During testing, I ran into issues using the Coldcard to sign. My approach: (On Electrum) File -> New/Restore -> Multi-signature ...
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Not able to Spend Electrum [2of2] Multisig

I recently sent btc to a multi-sig address, not realizing at the time. Now, when I attempt to begin a transaction; I am prompted swiftly with a (Partially Signed (1/2)) message, and given no ...
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24 views

Get scripthash for known scriptPubKey in PHP

I have to query addresses in ElectrumX server. How do I generate scripthash for a known scriptPubKey in PHP? Example address: array ( 'isvalid' => true, 'address' => '...
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45 views

Calculating the cost to send bitcoin?

This is a follow-up post to this question. I am using Electrum to send Bitcoin. From what I can gather, it doesn't seem like there is a way to know your "inputs" upfront. The inputs are the various ...
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17 views

Electrum history working locally, but not on server?

If I type this locally: electrum server Then I see the correct details: { "summary": { "end_balance": "0.009", "end_date": null, "from_height": null, "incoming": "0.009", "outgoing":...
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60 views

Intermittent error “min relay fee not met” even with decent fee and custom Electrumx+Bitcoind

I have an automated system that sends BTC payments via Electrum for a client. Now, it happens again and again that payments keep failing with "min relay fee not met" (RPC call failed: {"code":-32603,"...
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13 views

How to access Electrum remotely via the rest api?

I am able to execute calls on the server from the server. When I say calls, I mean like this. I.e. I can get the latest addresses doing something like this: $ch = curl_init(); curl_setopt($ch, ...
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50 views

Delete a specific private key from an Electrum 3.3.8 wallet via the command line?

I imported a few private keys into my electrum wallet via the command line. Now I want to delete these specific private keys from electrum 3.3.8 - What is the command to delete these keys from my ...
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42 views

Lost Transaction from Blockchain.com to Electrum

This link, https://www.blockchain.com/btc/tx/a081d03519bc0f1dcf4ac391da6f54d4d6091c458530b620f96eca5c1c5a3511, shows the transaction was delivered to the address "1Mv4fi8UdVhbfm9iLx2Bf8xhDrMv9sZSyD" ...
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38 views

Is the electrum android private key secure?

I have used electrum for many years on my desktop pc, and have alway felt very secure in doing so because of my ability to use a very strong password to encrypt my seed phrase with. However I just ...
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103 views

What are the difference between a segwit and legacy wallet

I am installing a mobile wallet and it ask me what type of address I want to use, I want to try and use a segwit address but is there a risk that my coins will be lost if I try to transfer fund from ...
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1answer
45 views

Can I import my wallet while my btc core is syncing

I'm upgrading my btc core to v0.18.1. I'd like to export my wallet to electrum. Is it possible while syncing? How?
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58 views

Electrumx protocol

The description states: A script hash is the hash of the binary bytes of the locking script (ScriptPubKey), expressed as a hexadecimal string. The hash function to use is given by the “...
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26 views

Imported keys to electrum

I recently had an unconfirmed transaction on my btc qt wallet. I am upgrading my btc qt now and it is syncing. In the meantime I imported my keys from all my receiving addresses to a software wallet. ...
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1answer
21 views

Electrum-personal-server isn't seeing any historical transactions; using a Trezor

I followed the instructions in the Electrum Personal Server guide. I know that the transactions are there because I checked wallet.trezor.io. But none are showing up in Electrum. I have run --rescan. ...
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1k views

Transaction with highest fee, but stuck, what did I do wrong?

I recently sent btc that appears to be stuck (https://live.blockcypher.com/btc/tx/c131d65d933e343f852021830b833123de952c1857f264503388cf642655c457/) The interesting thing is that I used a higher fee (...
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113 views

Unconfirmed transaction. How to make my wallet made whole

I am running a node with an unconfirmed transaction. I tried shutting down my btc qt so the transaction would be forgotten. To no avail it keeps rebroadcasting the transaction. I am in the process of ...
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20 views

Esplora on local elementsregtest - parse failed: data not consumed entirely when explicitly deserializing

this is related to esplora (the block explorer) and its electrs backend API. Is it possible to run esplora for a just a local elementsregtest? When I launch electrs this is the error I receive back: ...
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1answer
45 views

Electrum address syncronization

I need to periodically check the balance of a number of bitcoin addresses (a few tens or hundreds addresses). I noticed that Electrum may syncronize a thousand or more imported addresses in a matter ...
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1answer
34 views

Are transactions with an insufficient value marked as “failure”?

I have made a payment with an installed CardGate(curopayments.com) bitcoin gateway on a site, got a unique deposit adres, i sent a bit less than actual asked. The problem now is that the site owner ...
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86 views

Import bitcoin core generated multisig public address to electrum multisig wallet for watch(2/3) and sign(1/3)

I have 3 Machines, and I want to create (2/3)multisig wallet. Sign with other machines safely. I have; xpub1, xpub2, xpub3 xpriv1, xpriv2, xpriv3 Machine-1: In electrum: New/restore->Multisig Wallet-...
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39 views

having trouble installing electrum, can't find libsecp256k1

I'm having trouble running electrum from source. Seems I need to install libsecp256k1 (but I have bitcoin core v.18 installed so i thought i already had it). Electrum has docs about this: https://...
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77 views

Strange LockTime values in Electrum transactions?

Electrum includes a locktime in all transactions by default. Usually the value is equal to the current block height, eg 592918, however it sometimes drops perhaps 20 or so blocks. What is going on ...
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1answer
198 views

Convert EC PRIVATE KEY from .pem into WIF

I have a openssl generated private key in the following form: $ cat priv.pem -----BEGIN EC PARAMETERS----- BgUrgQQACg== -----END EC PARAMETERS----- -----BEGIN EC PRIVATE KEY----- ...
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1answer
36 views

Is it possible to recreate a multisig wallet with just 2 out of 3 private keys?

Example: Created a 2 of 3 multisig wallet in Electrum Send funds to the multisig wallet Lost the Electrum wallet Access to two of the private keys (e.g. 2 trezors) Is it possible to recreate the ...
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22 views

LCC Electrum Wallet Set Up With Ledger Nano S Cannot Find Private Keys, Sweep or Generate Seed [closed]

I have a problem with Electrum LCC Wallet. I set up the wallet using Ledger NANO S and seems it somehow attached itself to the LTC wallet in Ledger. I get this message every time I want to send LCC ...
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1answer
130 views

Bitcoin block headers download

i need all block headers hash (about 500k records), i tried to get from electrum wallet files, but when i convert the file to Ascii, it doesn't have full list. please help.
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1answer
33 views

Can I change a transaction description in Electrum while the transaction is still unconfirmed?

I inserted a wrong description into a transaction made with Electrum per mistake, so I double clicked the description in and changed it to another value, while it was unconfirmed. My question is, will ...
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Does Electrum reveal a wallets public key to Electrum Servers?

When Electrum Bitcoin wallet queries a random Electrum Server does it send the public key to the server or does it send a batch of addresses to check? For instance, after setting up Electrum Personal ...
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1answer
35 views

Can TREZOR sign transaction with input address beyond gap limit?

Suppose I use TREZOR with Electrum or Bitcoin Core HWI and significantly change the gap limit to, let's say, 100 000 addresses. I then receive BTC to my 999 999-th address and want to send them ...
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1answer
83 views

how to move bitcoin from watching only wallet to standard wallet in electrum 3.3.8?

I accidentally swiped my bitcoin into a watching only wallet in electrum and I need help to move it from "cold storage" to an active standard electrum wallet... Help!
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1answer
65 views

Is it possible to run electrum without QT on Ubuntu?

I want to run an electrum server and don't need the GUI. When I install it, I get: ubuntu@comp:~$ electrum qt.qpa....
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1answer
23 views

Bitcoin is not sending to correct address

While trying to send bitcoin I keep putting the correct address in the 'pay to' section but it keeps sending the bitcoins to the wrong address. While clicking the preview section on electrum the '...
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1answer
34 views

Is it normal all testnet p2wsh cosigners have same master public key?

Created a testnet p2wsh Electrum multisig 2 of 3 wallet. When I click on the radio buttons in Wallet/Information, all cosigners have same Vpub master public key. Normal? Asking because I am trying ...