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.
4,179
questions
0
votes
0
answers
26
views
LOST BITCOIN due to casino transfer
The casino never told us not to use cashapp as long as have bitcoin we can withdraw. My winnings of $100.00 still missing since Aug 2023. I have repeatedly requested help from them and they said look ...
0
votes
1
answer
16
views
bitcoin-qt wont launch after 4 hours
I decided to run a full node recently, as I want to import keys to a new wallet.
However, the program wont open while running a full node.
Started synching yesterday at morning, it synched up to 2018.
...
0
votes
0
answers
22
views
Verify your download
Why does Bitcoin core wallet bitcoin-26.0-win64-setup file
does not match the signatures of the SHA256 binary hashes or
SHA256 hash signatures which i can download same side. I think i do it wrong, ...
- 1
1
vote
0
answers
22
views
Bitcoin Core Node Stops Continuously
I've recently setup a Raspberry Pi 4 to run as a Bitcoin Core node. I've noticed that after starting Bitcoin Core is shuts down after a short period of time. My first thought was that the Pi was going ...
- 111
1
vote
1
answer
33
views
Can it happen that, after a bitcoin transaction, the change is sent to a receiving (not change) address?
I have an Electrum wallet and I can see there are 2 types of addresses: receiving and change.
Change addresses are supposed to receive the change bitcoins after a transaction, but can it happen that ...
- 191
1
vote
1
answer
66
views
Wallet transaction not confirming in blocksonly mode
I sent transaction with bitcoin-cli:
bitcoin-cli sendtoaddress tb1q3qlv7k648hec866a0x395hq0h3sqcg2lrq5r0k 0.001
As an answer I've got transaction Id.
But it still has no confirmation (a few hours).
...
1
vote
1
answer
45
views
Stuck in the middle between unconfirmed transaction and empty wallet
I initially set a low fee to one transaction, trying to cancel the transaction I runned bit coin core with -zapwallettxes and all transactions in bit coin core disappeared. I still can see the ...
0
votes
0
answers
33
views
Listunspent does not return all utxos [duplicate]
I am using Bitcoin Core to get all UTXOs for watchonly imported addresses. The strategy is the following:
I load a new wallet
await client.execute("loadwallet", ["testwallet"])
I ...
2
votes
2
answers
144
views
What types of RBF exist and which one does Bitcoin Core support and use by default?
As far as I know Bitcoin Core knows two types of RBF. These are Full RBF and Opt-in Full RBF. In both cases, the transaction will be replaced if a new one arrives that consumes at least one of the ...
- 568
1
vote
1
answer
76
views
P2WSH Bitcoin Core Witness Script Empty Error
I am trying to spend a P2WSH output. Here are the steps I have taken:
I have created a P2WSH output via bitcoin-cli. These are the details of the P2WSH output:
Type
V0_P2WSH
scriptPubKey (asm)
OP_0 ...
0
votes
1
answer
74
views
How to buy BTC with a non custodial wallet directly?
I apologize if this question does not make sense.
But please correct me if I'm incorrect.
If someone has a US Bank with a positive balance and has created a wallet using the bitcoin core "bitcoin-...
- 101
0
votes
0
answers
17
views
Orphan Blocks in my Debug.log -
My Debug.log shows
2023-10-27 05:48:02 ERROR: CTxMemPool::accept() : nonstandard transaction (scriptpubkey)
2023-10-27 05:48:02 received: tx (421 bytes)
2023-10-27 05:48:02 ERROR: CTxMemPool::accept() ...
0
votes
1
answer
34
views
Import old paper backup (WIF private key) into modern Bitcoin-QT
When trying to import a WIF private key into Bitcoin-QT i get this error:
Only legacy wallets are supported by this command (code -4)
How can one import a private key on a non-legacy wallet?
- 1
1
vote
1
answer
53
views
How To Reach My Funds From My Wallet Years Ago
I have a wallet.dat
and a .txt file
inside this txt file
wallet number like : L1aC2...
and a hash like: $bitcoin$64$a2z...
How can I reach to my fund inside this wallet ? I kinda have some memory ...
- 11
0
votes
0
answers
40
views
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 ...
- 1
2
votes
1
answer
63
views
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 ...
0
votes
0
answers
20
views
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: ...
- 1
3
votes
0
answers
31
views
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 ...
- 31
1
vote
2
answers
73
views
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 ...
2
votes
0
answers
48
views
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 ...
- 375
2
votes
0
answers
22
views
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 ...
- 229
2
votes
1
answer
54
views
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 ...
- 21
0
votes
0
answers
43
views
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 ...
- 31
3
votes
0
answers
58
views
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 ...
- 31
0
votes
1
answer
28
views
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},...
- 1
0
votes
2
answers
67
views
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 ...
0
votes
1
answer
39
views
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?
- 11
1
vote
1
answer
90
views
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, ...
- 143
2
votes
1
answer
86
views
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 ...
- 446
2
votes
1
answer
58
views
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 ...
- 173
4
votes
2
answers
129
views
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 ...
- 41
1
vote
1
answer
95
views
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 ...
- 11
3
votes
0
answers
24
views
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 ...
- 31
0
votes
1
answer
61
views
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 ...
0
votes
0
answers
38
views
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 ...
- 1,225
6
votes
3
answers
496
views
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 ...
- 478
2
votes
0
answers
21
views
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 ...
- 21
1
vote
1
answer
38
views
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 ...
2
votes
0
answers
41
views
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 ...
- 21
1
vote
1
answer
28
views
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 ""
...
3
votes
2
answers
104
views
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
...
- 658
0
votes
0
answers
35
views
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 ...
0
votes
1
answer
96
views
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 ...
1
vote
0
answers
117
views
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 ...
1
vote
1
answer
79
views
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 ...
1
vote
1
answer
56
views
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 ...
- 21
0
votes
1
answer
68
views
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 ...
- 103
3
votes
2
answers
141
views
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 ...
- 63
0
votes
1
answer
54
views
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 ...
- 1
1
vote
1
answer
56
views
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} ...
