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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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 ...
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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-...
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I have a old version of Bitcoin QT on Apple
Which I think is about 3 years plus old but it was on my old computer which died. I have now recovered the drive at the bitcoin-qt application but it won't run on my current computer either due to the ...
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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() ...
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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?
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Listunspent does not return all utxos
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 ...
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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 ...
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CScript to CPubKey or derive CPubKey from CScript
Please can someone advise if it is possible to derive the CPubKey from a CSript object? Provided i get it up with an address before hand,
I can use numerous functions to attain all the info from the ...
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Compiling a statically linked binary for bitcoin core v0.12.0
I'm trying to compile a statically linked binary following https://github.com/bitcoin/bitcoin/tree/master/depends. But when I run make I got this error:
fcmatch.c:284:63: error: '...
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How do I troubleshoot port accessibility to allow inbound connections on MacOS?
I'm wondering if anyone has experienced anything like this. IPv4 ports seem blocked. I have tried everything to open a port on my Mac but the port seems blocked.
It's like the only port that can be ...
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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 ...
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How to re-connect to `bitcoind -printtoconsole` after socket timeout?
I started bitcoind with the option -printtoconsole to check for errors and my terminal ssh connection was timed out during the night - probably because my computer was in hibernation.
I see that the ...
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gettransaction cannot get address where it send from
Hi i have test few time with gettransaction method, it seem only show full detail about transaction when send inside node.
But if i send from another address outside my node, gettransaction only show ...
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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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Bootstrap.dat on Mac OSX 10.9 - Difficulty
Been trawling through a lot of information (I know this similar issue has probably come up a fair bit) on this issue and going round in circles a bit. I am not the most tech savvy individual, and ...
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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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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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Running a bitcoind docker
Thanks to the bitcoin.stack community I have successfully launched a bitcoind docker with an external volume which has the block data
Currently its in 100% sync but I am facing an issue to get ...
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Bitcoin fails to compile with Boost
After running 'autogen.sh', './configure' and then 'make', I keep getting the following error:
Undefined symbols for architecture x86_64: "__ZN5boost10filesystem4path5imbueERKSt6locale", ...
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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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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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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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Could you hack Bitcoin / Proof of Work with one leading zero for each block?
I believe that in Bitcoin, if you would like to replace the chain, you need to pass 3 conditions. You need to have a longer chain (more blocks), you need to have a greater total difficulty (the ...
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listunspent rpc/cli command doesn't seem to list unspent unconfirmed transactions for watch-only addresses
I am unable to list unspent unconfirmed transactions for watch-only addresses. Once the transaction gets at least 1 confirmation it gets included in the returned result.
This is the command I am ...
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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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How to increase the speed of synchronisation?
What ways are there to increase the speed of synchronisation of the network, assuming the use of the main Bitcoin client?
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Bitcoin core synchronization too slow, only 16 hours of blockchain in 20 minutes
I have Bitcoin Core stored on my external disk and currently I am on 39%. but the problem is that it is getting slow for some reason. The Bitcoin Core Qt app is constantly beachballing on my Macbook ...
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How do I view Multisig Trades using bitcoincore?
For a school project my goal is to go analyze multisig trades, is there a way where I can make this information any more clear to me?
I have been running bitcoincore as a way to get trades that I can ...
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bitcond and bitcoin-Qt system configuration and bandwidth requirements
What is the best operating system configuration for a computer to run (bitcoind or bitcoin-Qt) and (BFGminer or CGMiner) under Linux, assuming that it will be connected to a 3 Terrahash mining rig on ...
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Upgrade from Bitcoin QT 0.8.5 to latest Bitcoin Core 0.15.X
I bought and transacted BTC in 2013/2014. I had a Bitcoin QT 0.8.5 wallet. I plugged it in and it updated correctly to the latest block. It correctly showed my BTC balance. I made a transaction ...
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Manually create a transaction to spend the output of a P2SH tx
I want to manually create a transaction to spend the output of a P2SH tx, but I don't know where the redeem script should be placed in the new transaction? I followed an online tutorial Building a ...
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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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BTC wallet recovery: I have a 17 word backup, what do I do?
I have a 17 word seed phrase from a 10 year old Bitcoin-qt/core? acct, but don't know what tool to use to turn it into a wallet. I also wrote down the 17 letter associated private-key itself. It ...
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Transaction created using `bitcoin-cli` failed to decode
I am creating a rawtransaction using bitcoin-cli. After I create my transaction using 'bitcoin-cli createrawtransaction ' this returns and HEX of:
...
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how to fix Bitcoin core 14.2 on Windows 10 Home 64bit ver.
I cant install Bitcoin Core 13.2 thru 15.01 64 bit on my window 10 64 bit system it worked ver 14.2 worked before I tried to sign into coinbase that emailed me an address that needed to Identify my ...
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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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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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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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Unable to start BitcoinCore: Unable to start HTTP server. See debug logs for details
After long time of not running Bitcoin Core I ran it and got:
Config file was:
# server=1 tells Bitcoin-QT to accept JSON-RPC commands.
server=1
# You must set rpcuser and rpcpassword to secure ...
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bitcoin.conf file on mac
I have installed bitcoin core on mac and accessed the config file from the preferences tab on the bitcoin-qt.
Now, I have started testnet on it by the below settings.
testnet=1
server=1
rpcuser=...
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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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Run bitcoin-qt at startup of Windows server
I am running bitcoin-qt on my server. I use .Net library to query it through windows services.
It all works when I start bitcoin-qt manually.
But if the server is restarted, I see that it is running ...
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Warning: Reducing -maxconnections from 1000 to 865, because of system limitations
I want to be the fastest/first one at recognizing/receiving new transactions, so i set i set these in bitcoin.conf and running a bitcoin full node on dedicated centos server.
maxconnections=1000
...
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Why is initial block download slow on Raspberry Pi 4 with SSD?
Ran benchmarks using sysbench and CPU, memory and networking performance is very similar on Pi 4 vs Lenovo ThinkCentre M92p (both quad-core with 4GB of memory).
Which benchmarks reveal why IBD is ...
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How many sigops are in the invalid block 783426?
On April 1st 2023 F2Pool mined block 00000000000000000002ec935e245f8ae70fc68cc828f05bf4cfa002668599e4 (full block) which my node failed with bad-blk-sigops.
Bitcoin Core stops counting as soon as it ...
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How to build Bitcoin binaries for Windows on Ubuntu using cross-compile
I am trying to build Bitcoin 0.13 for Windows. I've always used this guide for building previous versions. Now seems that developers have changed their mind regarding Windows, and the new way seems ...
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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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Sent bitcoin with no fee, waited and bitcoins disappeared
I sent about $425 to an adress from my bitcoin-qt wallet and forgot to include a fee. So I googled and googled and waited around for 4 or 5 days for it to stop broadcasting but I get on my computer ...
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How do I use bitcoind to spend from private key but not store it
I understand that I need to import a private key in order to spend bitcoins, would it be possible to generate/use an address without storing or the server having the private keys in the server
Ive ...
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Change -mempoolexpiry in BitcoinCore 0.20.1
I have accidentally made a transaction with a very low fee (5 sat/byte) and I doubt that it will be confirmed any time soon.
Replace-By-Fee is not available since my transaction has no change.
Abandon ...
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