Questions tagged [bitcoind]

This tag should be used for questions related to bitcoind, the command-line software for Bitcoin Core. It stands for "Bitcoin Daemon" where a daemon is any computer process which runs in the background ("service" in Windows terminology).

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Overflow bug bad chain length [duplicate]

Can someone recall how many blocks have been mined on the overflow bug chain until the new chain with the patch became the longer one?
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How do I set up bitcoind to track all address balances?

Bitcoind only stores information about addresses that you've added. How do I make it store balance and transaction information for all addresses so that given any address I've never seen before, I can ...
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Help a newbie. Need software [closed]

I want to invest in a mining farm. Everywhere I find only pieces of information. Help please - you need: What software is needed and for what. Where to begin. Equipment and installation conditions. ...
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Why Is it not possible to truncate the blockchain after Corruption detected

After running bitcoind (as part of myNode) for 6 monhths with no issue, I got this error: Fatal LevelDB error: Corruption: checksum mismatch: /home/bitcoin/.bitcoin/indexes/txindex/257701.log At ...
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"which bitcoind" outputs nothing

I installed bitcoind using Windows 10 WSL Ubuntu. I see the bitcoind.exe file in the src directory, but when I run "which bitcoind" I get no output.
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What's the difference between an 'address' and an 'addressHash' in a transaction on a bitcoind node?

I'm listening to a ZMQ socket; it's sending out messages every time my node receives a transaction. The message is the binary value of the transaction itself. When I decode the binary (using a tool in ...
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3 votes
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Compiling bitcoin error : A compiler with support for C++17 language features is required

I am reading the "Mastering bitcoin: Programming the Open Blockchain" book by Andreas Antonopolous. In the chapter about compiling bitcoin, the instructions were to execute first ./autogen....
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building bitcoin core - how to temporarily disable WSL support for Win32 applications

The build-windows.md says: "Additional WSL Note: WSL support for launching Win32 applications results in Autoconf configure scripts being able to execute Windows Portable Executable files. This ...
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What are the various Bitcoin nodes available which I can connect to via my lightning node

I am thinking of running my own lightning node in testnet. Going through the tutorials it seems the lightning node needs to be connected to bitcoin node inorder to get connected to bitcoin network. ...
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how to connect to bitcoin node in javascript without running a local node

I am trying to get some bitcoin network data and I am using bitcoind-rpc library. If i just run their example: var run = function() { var bitcore = require('bitcore'); var RpcClient = require('...
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What is the default username and password for bitcoin the rpc deamon?

What is the default username and default password for the bitcoin rpc? I have a bitcoin daemon running, but there is no bitcoin.conf file. If I attempt to query the RPC, I get a 401 Unauthorized ...
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only synchronize the memory pool transaction by bitcoind daemon

I want to use bitcoind to only synchronize the memory pool transaction, and close the block synchronization; I am going to monitor the dynamics of the memory pool in real time; are there parameters ...
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Can you program a transaction to automatically run once fees are low?

Can i program a bitcoin transaction to run when the network is not as busy or when fees are low? If you are not in a rush to complete trx.
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Is there a list of processes within Bitcoin that use hash functions?

Hashing within Bitcoin is done in several different areas of the code. EG: We have the SHA-256 mining algorithm, the Merkle tree hashing, and I believe double hashing within certain areas (SHA-256D). ...
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How to set up a listener on an address, and trigger events upon receiving transaction?

I have a task where I need to set up some sort of a listener on a particular bitcoin addresses for incoming transactions, and once a transaction arrives, I need to call some function in my web service....
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Why is the rate of reindexing chainstate not constant?

What determines the speed of the reindexing-chainstate in the different times? I spend a few days (2 week) for reindexing locally on my new HDD, and I noticed one thing: the speed of reindexing is ...
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How to secure bitcoin node (bitcoind) that is used only to broadcast transaction?

I always wanted to run a bitcoin node at home. But I always worry because it is related with bitcoin (BTC has value). I have been broadcasting my transaction using Bluewallet by scanning qr code, or ...
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How to mine continuously in segtest with version bitcoin-0.20?

I am just learning the bitcoin codes for version bitcoin-0.20 and I make it successfully. Additionally, I have only one PC. I want to mine continuously in segtsest, however I only found methods below: ...
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How to load Bitcoin-qt using blockchain directory already existing on a hard drive?

I've had issues with downloading the blockchain using windows/mac. For some reason, it would eventually cause an issue whilst downloading and cause me to have to start again. Instead, I have been ...
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Copy data from full node to a new pruned node to sync faster

I already have a full node synced with blocks and chainstate folder, however i wanted to run a pruned node, is there a way to copy the blocks or chainstate folder to make the initial sync of the ...
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Node Stability And Troubleshooting

Background: Not a lot of linux experience but technically able What's the best way to troubleshoot the stability of bitcoind? I've had it just stop for no discernable reason. I'm doing a full sync ...
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Why .bitcoin is at /root in Arch/Manjaro Linux?

I've installed bitcoin-core and downloaded the blockchain in Ubuntu. Now that I have switched to Manjaro Linux and installed bitcoin-core again, It creates the .bitcoin directory in /root/.bitcoin/ ...
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Verify everything is functioning in my full node

This is a newbie question, sorry. I recently bought Bitcoin and thought I would do something to support the system that I have invested money in. So I bought the hardware to run a full node. I just ...
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Macro HAVE_DECL_FORK

I'm a new learner of bitcoin project. I'm aware that the macros in header file config/bitcoin-config.h and whole file itself were generated by autoconf. Looked into configure.ac, regarding to fork ...
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Node won't start after raspberry pi update

I shut down my new node today for the first time using the stop command to update and restart the Raspberry Pi that it runs on. After booting the pi back up, I do the full path command to run bitcoind,...
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How to merge the datadir with .bitcoin directory?

I changed the path of datadir in bitcoin.conf from .bitcoin directory to somewhere else. Now that I need to backup my blockchain data, I want to have both .bitcoin and blockchain data together. ...
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Pruned Bitcoind Backend for LND with txindex enabled for version > v0.13.0

I'm looking to prune a bitcoind node that will be used by LND. https://github.com/lightningnetwork/lnd/commit/410b30b9caaf59a78a29d8b924e14395b7daa59d From the LND commit recently by Kixunil. Note ...
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1 vote
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How to get peer nodes information from bitcoin CLI?

I saw a feature called Node Window in the bitcoin GUI environment, that shows information about peer nodes, like User-Agent, Received (Data), Sent (Data), Ip, etc. How do I can get such information ...
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Procedure to recover BTC stuck in 2/2 Multisig

I opened a 2M Sat Channel and my peer should send me back 1M Sats Onchain, as I have pushed half. Now unfortunately, I’ve sent my peer the address of the 2/2 Multisig of the funding TX and not the ...
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Bitcoin core initially downloads IBD quite fast , then it slows down a lot , What could be the reason? [duplicate]

I am trying to setup a bitcoin node , ran bitcoin core and it started the download process quite fast ETA 18 hours , gradually the speed decreases . When I started download it showed like 17 hours ETA,...
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How to compute deposits from the output of listsinceblock?

I am writing a program that, given the JSON outputs from multiple separate RPC calls to listsinceblock, stores valid deposit transactions in a database and then computes the total deposit for every ...
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Regtest mode lose blocks?

I'm playing with bitcoind, I'm an started in this subject and I'm playing with the regtest=1 option of course. The thing is that after one day all the transactions are lost, I'm trying to get the ...
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How would I ever know if my solo miner found a block?

I've tried solo mining in two ways: using cgminer, ASIC and ckpool using minerd connected to my own instance of bitcoin-qt. Either way, I've never seen any indicator showing that I have mined 0 BTC, ...
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Does Bitcoin-core support creating a new Bitcoin blockchain?

My goal is to add a new feature to Bitcoin, which requires changing the structure of the Bitcoin blockchain. So I was wondering if Bitcoin Core supports having a new/own Blockchain? If so, how to do ...
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Regtest at height 120k took 600ms to generate a block

Just doing while : do time bitcoin-cli generatetoaddress 1 <non_local_wallet_address> bitcoin-cli getblockcount done brings regtest blockgen times up to 600ms when generating a block at the ...
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Bitcoin HD Wallet using C#

What packages do I need to use for creating Bitcoin HD Wallet in C# using BIP44? How can I connect to a remote Bitcoin Node to read all the deposit transactions received by various child addresses in ...
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Running bitcoind regtest with docker containers

I am running bitcoind regtest locally with the method from this article https://medium.com/ssde/how-to-use-docker-to-setup-multiple-bitcoin-test-nodes-on-your-own-mac-phase-i-8c6e5442c189. However, ...
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1 vote
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Bitcoin transaction not confirmed since 3 days ago [duplicate]

Hello I might sound stupid but it’s been three days since I issued bitcoin transactions, all unconfirmed so far. I use Blockchain.com to manage my wallet and have done everything normally (I think, as ...
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How do I get the private key of an address in descriptor wallets? How to dumpprivkey?

When I run dumpprivkey from Bitcoin Core 0.21.1. I get the following error message: error code: -4 error message: This type of wallet does not support this command I came across achow's explanation ...
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Python code error : Hash greater than Target

While trying to run a reference code from GitHUb i am getting an error "Cannot Mine-Hash is greater than Target". As i am just a beginner with coding i am not able to figure this out. Kindly ...
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I can't start bitcoind on Raspberry Pi. Why do I need settings.json.tmp when I didn't need it before?

I've reset my raspberry pi because after configuring Samba, bitcoind started downloading the blockchain much slower. Removing Samba didn't return it to the original speeds so I figured starting with a ...
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1 vote
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`reindex-chainstate` configuration in bitcoin.conf?

Is there a specific flag I can place in bitcoin.conf to reindex the chainstate (not command line)? Ie: reindex=1 does a full reindex is there a flag like reindex-chainstate=1 or similar?
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Can bitcoind listen on both ipv4 and ipv6?

Can bitcoind listen on both ipv4 and ipv6? I know it can make outbound connections on both (onion and i2p) but can it also advertise multiple public hosts if available? This question was asked by ...
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3 votes
2 answers
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Is there a way to avoid sendtoaddress from "sweeping"?

I have a wallet that has several hundred small amounts residing at multiple addresses. I noticed yesterday that, when sending a relatively small amount to a third party that the bitcoind "swept&...
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Reuse of rpc cookie authentication

I'm looking for clarification of an answer on original thread where the accepted answer states "This option (the authentication result from Python) can be specified multiple times" As I ...
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Error sendrawtransaction BTC 0.21 Fee exceeds maximum configured by user

How to fix Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate) (code -25) in BTC 0.21? sendrawtransaction "hexstring" Result: Fee exceeds maximum configured by user (e.g. -...
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Get/Calculate Address

I'm currently using a program that analyses the block files. It splits all the stuff into multiple .csv files. Is there any method I can do to get the addresses & amount sent/received from tx_in ...
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Accessing bitcoind from python module hits error

I am experimenting with the blockchain a bit, specifically trying to use the python-OP_RETURN module to put a few bytes into the blockchain op_return field. To use this module I blv I need a running ...
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1 vote
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Why are adresses not showing up in gettxout?

I have a bitcoin node but whenever i try to gettxout i get this response: user@bitcoin:~# bitcoin-cli gettxout "0e3e2357e806b6cdb1f70b54c3a3a17b6714ee1f0e68bebb44a74b1efd512098" 0 { "...
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Bitcoind information about the input and output

Im trying to get the wallets/accounts the money got sent to. But getrawtransaction does not give any information about the reciever or sender
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