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Questions tagged [bitcoin-core]

A full node implementation of the Bitcoin protocol with a GUI and a wallet. 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".

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Not able to compile bitcoin core on VS 2022

VS is not able to detect some .hpp files from the boost library. Some files have the following header file calls : #include <boost/multi_index/hashed_index.hpp> #include <boost/multi_index/...
Fayas Mohamed's user avatar
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36 views

At what point in time is this "sendcmpct" message sent

In Bitcoin Core, when setting a node to either high-bandwidth mode or low-bandwidth mode, a "sendcmpct" message is sent. At what point in time is this "sendcmpct" message sent? Is ...
masuda's user avatar
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In Bitcoin Core, how do nodes transmit blocks, either in parallel or in series? [duplicate]

In Bitcoin Core, do nodes transmit blocks sequentially to adjacent nodes, or is it a parallel transmission where blocks are sent to multiple nodes simultaneously? Additionally, could you provide ...
masuda's user avatar
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2 answers
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Fragmentation of UTXOs?

Every Bitcoin transaction results in a transaction split, as we know: a) receiving amount and b) transaction fee. Transaction fees are usually a few thousand satoshis. Then there's c) the 'change' ...
richey's user avatar
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1 answer
389 views

In Bitcoin Core, are blocks sent in parallel or in series?

Are blocks sent in parallel or in series? I would also like to know about the implementation part of Bitcoin Core.
masuda's user avatar
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How to decide on custom network fee?

I'm slightly stuck. I hadn't bought any BTC since Oct 2023 and so didn't notice that the network fees had got so high so now I have some BTC on an exchange and I'll have to pay £20 or so to send it to ...
Cromulent's user avatar
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1 answer
258 views

I forgot the password of my Bitcoin Core Wallet

In the past years, I had some Balance in Bitcoin Core wallet , but after 5 years, I forgot the transfer password and I only have the backup file (.dat). Is there a solution that I can transfer the ...
igcs Computer's user avatar
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1 answer
257 views

Why is the network fee so high at the moment?

I bought some BTC on Coinbase like I've done fairly often in the past but when trying to transfer it to my private wallet the network fee is £16. I've never seen the fee this high before so I'm a ...
Cromulent's user avatar
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Import brainwallet.io Address to Bitcoin Core [duplicate]

A while ago I created an address and private key on brainwallet.io now I would like to add those to my bitcoin-qt wallet. I don't see an easy way to do that in the interface nor with the cli importXXX ...
William Rusnack's user avatar
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63 views

FAIL: qt/test/test_bitcoin-qt.exe when running 'make' after building Bitcoin Core 26.99.0

I'm building Bitcoin Core 26.99 following this: https://github.com/bitcoin/bitcoin/blob/master/doc/build-windows.md I'm using this option for building Bitcoin Core on Windows: Windows Subsystem for ...
amaluenda's user avatar
4 votes
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What's a rule of thumb for setting the maximum number of connections?

Connectivity of full nodes varies a lot, ranging from phones with mobile service to servers in data centers. Also, many nodes probably have asymmetric bandwidth. Assuming the goal of maximizing ...
real-or-random's user avatar
4 votes
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addnode + v2transport (BIP324) argument available to the bitcoin.conf?

I'm trying to use the new v2transport argument on addnode= in bitcoin.conf to attempt to connect to the peer using BIP324 v2 transport protocol. I tried using, for example, the bitcoin-cli addnode &...
2F4kT0r's user avatar
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172 views

Potential stale tip detected while shutting down Bitcoin Core

I tried to shut down Bitcoin Core and it took a very long time. So I looked in the log file and found the following messages: 2023-12-18T18:36:58Z Shutdown: In progress... 2023-12-18T18:36:58Z net ...
Zephyrus's user avatar
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4 votes
1 answer
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CLN config file unrecognized options

I'm trying to get CLN connected to a running Bitcoin Core node, but it is telling me I have unrecognized options in my config file. I thought the problem was that the data directory for the bitcoin ...
Zephyrus's user avatar
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Does a Raspberry Pi have enough CPU power to run a full node and an electrs server?

Very curious if anyone has this particular setup, currently am running the aforementioned on an old Acer laptop but it's struggling hard.
BillyT's user avatar
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Bitcoin-cli does not connect to bitcoind and cant execute commands no matter what

I have: server=1 daemon=1 in the config, bitcoind running as user as well as bitcoin-cli, no special config or anything - when I try to use bitcoin-cli it wont connect to 127.0.0.1:8332, bitcoind is ...
BobbyJones's user avatar
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193 views

Long Vanity Addresses

Just stumbled upon this address: https://www.blockchain.com/explorer/addresses/btc/1HELPAKUTA4n4YdpYQSEK2Rhot6ZnL5P8Y It sent a small amount of Bitcoin to some well known Bitcoin wallets on 2nd of ...
Neo's user avatar
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Does Wasabi accept importing a bitcoin core wallet?

I'm new in this my question is: I have a Bitcoin Core wallet (full node running on a Linux server). Is there any way to import the backup file wallet.dat or the private keys to Wasabi wallet?
miso's user avatar
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1 vote
1 answer
310 views

I Can't Get Inbound Connections to My Node

I recently set up a Bitcoin Core Node on a Raspberry Pi. It is fully caught up to the chain tip and has 10 outbound connections. I am using bitcoind to configure the node and have not been able to get ...
jctbtc's user avatar
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Import transaction history to new wallet?

I imported old addresses to a new wallet, in order to isolate them. These addresses are empty, but they had several transactions years ago. Problem is, these transactions are not showing up in the new ...
Wolfstorm321's user avatar
2 votes
1 answer
109 views

Recreating bitcoin core signature

I am trying to recreate the exact same signature as Bitcoin Core. I have installed bitcoin-core/secp256k1, but I get sometimes different signature as Bitcoin Core (which are valid). I read that since ...
Pawel's user avatar
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Cannot import multisignature descriptor in Bitcoin Core

I created a multisignature address in regtest: ADDR_1=`bitcoin-cli getnewaddress "" "bech32"` ADDR_2=`bitcoin-cli getnewaddress "" "bech32"` PB1=$(bitcoin-cli -...
monkeyUser's user avatar
2 votes
2 answers
170 views

How does Bitcoin core knows whether CPFP carve out rule is already used?

Bitcoin node has 2 rules that limit the use of CPFP: number of descendants (including transaction itself) can't be more than 25 total size of transaction and all its descendants can't be more than ...
LeaBit's user avatar
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2 votes
1 answer
112 views

Why can't I import a Bitcoin Core private key into an Electrum wallet that supports Lightning?

Why can't I import a Bitcoin Core private key into an Electrum wallet that supports Lightning? Running importprivkey in the Electrum console, I get: Error: This type of wallet cannot import private ...
Geremia's user avatar
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1 answer
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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. ...
Wolfstorm321's user avatar
0 votes
0 answers
78 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, ...
Rob's user avatar
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1 vote
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42 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 ...
jctbtc's user avatar
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1 vote
1 answer
236 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 ...
Dan's user avatar
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1 vote
1 answer
116 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). ...
Nikolai Kushpela's user avatar
2 votes
1 answer
102 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 ...
Fabrizio Bitti's user avatar
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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 ...
Nahum Maurice's user avatar
3 votes
2 answers
614 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 ...
LeaBit's user avatar
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1 vote
1 answer
122 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 ...
BitcoinQuestioner's user avatar
0 votes
1 answer
222 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-...
Ralph Yozzo's user avatar
0 votes
2 answers
208 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?
Ken's user avatar
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1 vote
1 answer
210 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 ...
Lones's user avatar
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0 votes
0 answers
124 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 ...
Shane C's user avatar
3 votes
1 answer
108 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 ...
Fabrizio Bitti's user avatar
0 votes
0 answers
27 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: ...
George's user avatar
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3 votes
0 answers
97 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 ...
daniaoren's user avatar
1 vote
2 answers
110 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 ...
Potential Difference's user avatar
2 votes
0 answers
63 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 ...
C-Otto's user avatar
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3 votes
3 answers
155 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 ...
codepleb's user avatar
  • 187
2 votes
1 answer
146 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 ...
Kareit's user avatar
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0 votes
0 answers
50 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 ...
masuda's user avatar
  • 81
3 votes
0 answers
65 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 ...
masuda's user avatar
  • 81
1 vote
1 answer
130 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},...
GabrioT's user avatar
  • 11
0 votes
2 answers
140 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 ...
albaokilml's user avatar
0 votes
1 answer
85 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?
Carmen Duda's user avatar
2 votes
1 answer
1k 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, ...
Mihail's user avatar
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