Questions tagged [bitcoin-core]
Bitcoin Core is a full node implementation of the Bitcoin protocol with a wallet and GUI. Bitcoin Core is a MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin Core software.
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Bitcoin Core not displaying my account balance, can't do anything with it
Over a month ago on , I tried to send my balance from my Bitcoin Core wallet to another wallet on a different client, but I had accidentally set a really low transaction fee, leading to the ...
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Lost bitcoin in a blocked transacion
I was trying to transfer some bitcoins from my bitcoin core wallet to another online wallet.
I did this transaction like 3 weeks ago. and I think I have lowered too much the fees.
The transaction was ...
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Can I use 2 individual private keys to spend from my Bip32 HD 2 or 2 multisig?
Example keys are fake:
If I build a 2 of 2 in Sparrow or any Bip32 Determ wallet, with P2WSH native segwit, and ONLY send funds to the very FIRST receiving address:
m/48'/0'/0'/2'/0/0: ...
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Bitcoin core shutdown after running for about 1 day
I have my bitcoin core daemon up and running on Ubuntu. However it always stops after running for serveral hours or 1 day. Here's the debug.log before it stopped.
2023-11-23T18:04:42Z [net] Saw new ...
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From a technical point of view rather than an economical one, is it possible to mine bitcoin on a laptop?
I would like to mine bitcoin on a laptop, the aim is not to turn a profit but rather learn how mining works without spending money on an ASIC and electricity. I thought about buying a cheap low TH/s ...
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46
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Page size of read (and write) operations
I'd like to fine-tune the recordsize parameter of my ZFS file system used to store the blockchain and related data to optimize my public node's performance. Which page size does bitcoind (Bitcoin Core ...
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For running a lightning node and getting maximum exposure, should I forward port 8333 also (for bitcoin)? Or only 9735 (lightning)?
I've been wondering about this. From what I read, people only open 9735 to run a "successful" node.
To me it makes sense not to open bitcoins port, but I could also imagine that some ...
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51
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Is it possible to download only a part of the blockchain?
I am doing some investigation related to the bitcoin transactions graph and I don't need the whole blockchain, because it would be too much data (and I don't have much space). I just need a part of ...
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Where does Bitcoin Core implement announcement of blocks optionally by `cmpctblock` or `inv` messages?
In BIP152 implementation note
Nodes MAY impose additional requirements on when they announce new
blocks by sending cmpctblock messages. For example, nodes with limited
outbound bandwidth MAY choose ...
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the switching timing between high-bandwidth mode and low-bandwidth mode in CompactBlockReray
If the Compact Block transmission node is bandwidth-limited, there is a statement in bip152 implemention Note that an 'inv/headers' is sent. Are there specific thresholds or settings for this in the ...
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Snap Install Bitcoin Core on WSL Ubuntu 22 doesn't add binaries to PATH
I'm trying to install bitcoin-core on my WSL Ubuntu 22. I've already snap-installed bitcoin core on my bare bone Ubuntu 22 and once completed it adds to the path the binaries bitcoin-core.{cli,daemon},...
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54
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Bitcoin node : importprivkey does not import all getnewaddress previously created
I have a problem with my bitcoin wallet recovery process.
I have a wallet with thousand of address attached created with RPC method 'getnewaddress'.
I would like to have a recovery process for this ...
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1
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36
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Bitcoin Core transactions between wallets
How can I move Bitcoin from a descriptor wallet to a legacy wallet on bitcoin core.
What is the difference between a descriptor wallet and a legacy wallet?
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Bitcoin Core really slow to sync recently
Apologies if this is not the right place to ask for help with this, but I don't know where is.
I have a Bitcoin Core full node (Windows 11), but one that doesn't run all the time. Node is not pruned, ...
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Why can't I bumpfee the 25th tx in an unconfirmed chain?
I have a chain of 25 unconfirmed transactions. There's a default mempool limit of 25 chained unconfirmed transactions, so my change output of the 25th transaction is not usable until some of the ...
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How to remove a tx from local node mempool that's been removed from all other node
I'm running a fullnode with electrumx on top for indexing. I've noticed that sometimes, due to low fee, a tx gets dropped from mempool after some hours/days. However, it stays for longer periods in my ...
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What if a miner just broadcasts the header and never gives the body? What will happen?
What if a miner just broadcasts the header and never broadcasts the body?
For example:
A miner, after having successfully mined some block, just broadcasts the header for all other miners and hide the ...
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85
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Private key on Bitcoin Core
I can't create the private key of a legacy address on bitcoin core. When I do the command it writes me that it can only be done to legacy addresses. And my address is legacy. What should I do. Thank ...
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Cannot find bitcoin.conf on macOS
I want to run a pruned node. I mistakenly referred to a guide for a full node to connect to Sparrow wallet, which required adding server=1 and txindex=1 in the bitcoin.conf file. I reached this file ...
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58
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Gen=0? Will still mine Bitcoin, but will not generate Rewards
I have a debug.log showing approximately 80 rewards from january 2009 to roughly sometime 2011.
I am using bitcoin 0.8.6-beta with Gen=1 and I've ran my wallet through bitcoin 0.8.6 a few times. I've ...
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Is it possible to make functional tests use my `bitcoind` running node as node?
I'm trying to fix some tests that are broken due to my own changes in the code base, and need to simultaneously run functional tests and bitconid in regtest mode and make functional tests to use my ...
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Is it advisable to operate a release candidate full node on mainnet?
Bitcoin Core 26.0rc2 was released a few days ago.
I've observed that several node operators have already installed this test release candidate version and are running it on the mainnet. Data from ...
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listaddressgroupings or dumpwallet? I need to dump private keys from Bitcoin-QT
I have a Bitcoin-QT wallet and the client is more than a year out of sycn. It would take years and massive amount of data to get it synced so, this is out of the question.
My plan was to move my coins ...
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What is the best way to restart bitcoind after a bitcoin.conf change (Ubuntu 23.10)
I'm curious about the recommended way to restart a systemd service after a configuration change or if there is any particular issue with running sudo service bitcoin restart to have the config change ...
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39
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Bitcoin core syncing txindex stalls
Bitcoin core bugging out since what I assume was a bad shutdown. Mostly fixed (I think) but stalling trying to resync txindex. Here's the history:
Core wouldn't connect to peers or load the latest ...
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1
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27
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The QT wallet does not start
The QT wallet does not start:
./bitcoin-qt в ubuntu 20.04? qt.qpa.plugin: Could not find the Qt platform plugin "offscreen" in ""
...
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98
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Bitcoin Core configured for testnet, syncs mainnet
I'm trying to get Bitcoin Core to sync the testnet, but it keeps syncing the mainnet instead.
Here is my bitcoin.conf file:
[test]
addnode=104.237.131.138
addnode=151.80.205.132
addnode=192.155.82.123
...
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34
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Bitcoin Stratum Protocol Implementation In Python
First of all, I am very new to Bitcoin mining and using Python to learn Bitcoin mining for educational purpose. I am using AntPool for pool connection.
When I send mining.subscribe request, it returns ...
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88
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How to get scriptPubKey from public key hash
My goal is to create a transaction. For that I need to know the following things:
The private key signing the transaction.
Who can spend the bitcoins that I'm sending.
Valid UTXOs that the sender can ...
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101
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Decrypt an encrypted mkey from a corrupt Bitcoin Core wallet.dat file
I have a 94 digit encrypted mkey that I obtained from my corrupted bitcoin core wallet.dat file.
I also have the password, the salt, and the number of iterations.
Using the password I’m unable to send ...
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75
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Broadcast transactions through bitcoind without importing private key
My question has already been asked before, and some answers were also already given
the question, however, it's not clear to me why I get some behaviour when implementing it. Here are the details:
I ...
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54
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BitcoinCore 25.1 won't launch (Windows 10.0.19045)
I updated BitcoinCore (v19 to 25.1) and get this error at launch:
Error: Error reading configuration file: conf cannot be set in the configuration file; use includeconf= if you want to include ...
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66
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Coldcard sparrow
I experienced what the user on Reddit here experienced. Any idea why this happens ?
https://www.reddit.com/r/coldcard/comments/17epqk8/040_bitcoin_taken_instantly_from_my_coldcard/
Doesn’t look like ...
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132
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Bitcoin Core RPC for transactions of a new address without rescanning
I currently use the importaddress wallet RPC on Bitcoin Core to rescan the transaction history related to an address, which I then query using listtransactions. The address import takes about a hour ...
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Can i send bitcoin from one address in wallet with multiple addresses?
I have a btc backup wallet.dat file. I dumped the file with pywallet.py using python. I now have the wallet.txt showing all my addresses (Legacy) with their private keys in that wallet. So there are ...
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confirm bitcoin node on bitnodes.io
The Bitcoin Core 25 App has just finished syncing 100% on the Umbrel node. Within the App I confirm seeing new Bitcoin blocks arrive. Not sure why bitnodes.io shows the following message:
{IP Address} ...
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298
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spending unconfirmed utxos which exist in the tail of mempool queue
I have some unconfirmed utxos with: sat_per_vbyte=1, which probably exist in the tail of the mempool queue, e.g. 22300/22385. They are being kept in: "unconfirmed" since 3 months ago. And ...
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Are Bitcoin Core binaries from before 0.8.6 available?
Are binaries for versions of Bitcoin Core (previously called just "Bitcoin") before 0.8.6 available from any reputable source? Prior releases of Bitcoin Core were made to SourceForge, but ...
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How to use bitcoin core importmulti
I have some keys obtained from walletdump,
13LJXzFwARH5N2bR1AV38Nf9qDVw53PjiB
1BcBMuEJJzEY36PmKWTFmYRxEF3YaSEiKN
1NeZCnuSW9NG8F147VNf8JSLKWGcVexZ32
...
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How to change Bitcoin core 25.0 configuration?
I installed Bitcoin Core 25.0. Synchronization finished after a few days. Unfortunately, I made a big mistake, I configured the files incorrectly and now the application does not open.
I must honestly ...
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Retention and Accessibility of Disconnected Block and Transaction Data
In the context of a fully indexed, non-pruned Bitcoin Core node, I am exploring the duration and persistence of data related to disconnected blocks and their contained transactions due to a blockchain ...
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How does mining verify a transaction?
I’m very much new to understanding this whole bitcoin concept. As far as I’m concerned, nodes mine for a nonce that, when paired with the data of the block, result in a hash that suffices some ...
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Can I connect a hardware wallet to Bitcoin Core using HWI?
Presumably HWI on github.com is to do with creating a hardware wallet interface with Bitcoin Core. Am I correct?
What stage is development at presently?
Will one be able to connect a hardware wallet ...
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76
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Bitcoin Core balance incorrect after connecting Sparrow wallet
I have a Sparrow wallet with previous transactions that was connected to an Electrum server. I installed Bitcoin Core v25, downloaded entire blockchain (no pruning) and switched my Sparrow settings ...
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NodeJS code to deobfuscate chainstate data
I am currently working on a Blockchain trading platform for a company and I want to have all the unspent output saved to a local database by reading the contents of chainstate folder but I couldn't ...
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Bitcoin Core Unbuntu Custom Data Directory Does not Navigate to Secondary Internal Hard Drive
I have a laptop computer with 2 solid state internal 1000 GB hard drives. I have the operating system installed on drive 1 and I have the secondary drive formatted (ext4 file system), partitioned and ...
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Bitcoin-cli keeps crashing around block 810180 and will always restart at block 809941
So I'm downloading and syncing the blockchain using bitcoin core. Whenever it teaches block 810810, the terminal will just close by itself and then I restart the node, it will start syncing from block ...
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How to get block height from CTransactionRef object in Bitcoin C++ code?
I'm working with the Bitcoin core code. I have a CTransactionRef object and I'm trying to determine what the block height of the block containing the transaction is. What would be the most efficient ...
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57
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Get utxos for an address without rescanning the whole chain
In order to gather the utxos for an address importdescriptors will rescan the blockchain. Is there another way to get all the utxos for an address / descriptor without having to rescan the block chain?...
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48
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Downloading of Bitcoin Core node stopped at 65.5%
My downloading of Bitcoin Core node stopped at 65.5%. I'm new to coding, but checked debug.log anyways and got the following ream of error messages:
2023-10-06T01:58:47Z ERROR: ReadBlockFromDisk: ...
