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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bitcoind restarting on its own

I'm experiencing periodical node restart, happening every minute or two. Happens on Ubuntu 20.04LTS, bitcoind version is v0.21.0. I'm running it as a systemd service using the following file: ...
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1 answer
178 views

End to end bitcoin transaction flow

My understanding on bitcoin blockchain technology after going through some articles in past few days. I'm not sure that my understanding is 100% correct. I'm writing so that someone can correct me ...
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3 votes
1 answer
94 views

What does the RPC call "getmemoryinfo" show?

What does the output of the RPC call getmemoryinfo actually mean? For example, this is from my node running in Docker. Does that mean the bitcoind process inside the container is only using 64272 ...
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1 answer
274 views

Bitcoin Core v0.21 RPC credentials going bad

I have tried to upgrade to bitcoin core 0.21 but things are not going good. I need some help. I'm using Debian Buster. I was using bitcoin core 0.20.1 before. The folder locations are as I have in my ...
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2 answers
135 views

List transactions after losing wallet and private key?

I have made various transactions with my wallet using bitcoind. If I lose my wallet (and private key) and somebody else somehow knows my private key and does some transactions, is it possible for me ...
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1 vote
1 answer
119 views

Connect to custom bitcoind

I have a fully synchronized btc node on my network. Which mobile apps (android) and desktop apps can I use to connect to this node without running a full node/ daemon on the desktop or mobile? And how ...
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2 votes
3 answers
309 views

Is there a script for bitcoin core which prints all spendable UTXOs given a private seed?

I am looking for an open source script or application which would take a private wallet key from the user (from terminal input or file, as mnemonic or xpriv string) and then connect to a bitcoind and ...
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0 votes
1 answer
102 views

Force Inbound Connections to IPV6 only

Is it possible to restrict all connections to an IPV6 address? I've set onlynet=ipv6 bind=:: But it seems that nodes are still attempting to connect to an IPV4 address (in addition to the IPV6 ...
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2 votes
2 answers
180 views

Setting the fee rate on regtest, or, quickly generating full blocks

I'm setting up some automated testing for a lightning wallet. At the heart of my tests is a bitcoind instance running in regtest mode. I need to be able to set the fee rate - both the fee rate ...
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-1 votes
1 answer
210 views

What’s the difference between a Bitpay wallet and a regular bitcoin

Just need to know the difference between the two and what’s the difference between the BitPay wallet and regular bitcoin
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Bitcoin core Recent Transactions seems Empty

I have setup bitcoin core 0.20.1. Everything is set up correctly, I made a transaction on main net - but it is not showing under recent transactions. Though transaction is confirmed on blockchain. ...
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1 vote
1 answer
3k views

Pruning Blockchain, what does it remove?

I am trying to determine if I want to prune but I'm trying to figure out if it would interfere with anything. Would it interfere with rpc calls to show info on a transaction/block? A full explorer? ...
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1 answer
510 views

Failed to start bitcoin daemon using Ubuntu 20.04

Hey I keep getting this error everytime I run sudo systemctl enable --now bitcoind Job for bitcoind.service failed because the control process exited with error code. See "systemctl status ...
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0 answers
25 views

Most Energy-Efficient Way To Reactivate Disabled Operational Codes (Opcodes)?

Currently, there exist a number of operational codes (opcodes) within the bitcoin protocol that have been disabled for security reasons. These script functions of the bitcoin protocol were taken out ...
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0 votes
1 answer
896 views

Mining Pool hub support cpu miner?

I have a simple/old CPU (like dual-core/Quad-Core) with unlimited electricity and all the other stuff. I would like to run 10 PCs with CPU mining. It's better to mine solo or the join mining pool hub? ...
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Signing transaction for later use

If I have a segwit UTXO with for example 10 BTC , can I make some raw transactions ready to get broadcasted?
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4 ERRORS GENERATED WHILE INSTALLING BITCOIND

I need your help plz. I have been struggling for weeks to make bitcoind work in my mac terminal. I installed all required programs and dependencies: xcode, bitcoin core, openssl, homebrew, and cloned ...
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0 votes
1 answer
203 views

How can I split blockchain data over two hard drives?

My node has two SSDs and the first one is filling up. The second one still has ~230GB available and I would like to move old blockchain data over there to free up an equivalent amount on the first ...
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1 vote
1 answer
60 views

Is it possible to detect if flag -txindex is enabled using RPC?

Using JSONRPC, how do I detect if a node has -txindex enabled?
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6 votes
1 answer
303 views

What version of C++ is used in Bitcoin Core?

I can't find the information on which C++ version is being currently used in bitcoin core project? Is it decided for future releases somehow? How does the situation looks now? The only thing I could ...
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2 votes
1 answer
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How does electrum interact with the underlying bitcoind service?

I am a bit confused regarding the bitcoind peers and Electrum X peers. From what I understand, the electrum X protocol is built on top of the bitcoin blockchain, but I cannot quite wrap my head around ...
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  • 123
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1 answer
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How to generate new wallet address per token

I'm using getnewaddress bitcoin-cli function to generate wallet addresses but i need one address per token. Is it possible to use a parameter like seed for random numbers to get the same address when ...
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1 vote
1 answer
132 views

Can I interrupt the initial blockchain download without losing progress?

I just installed Bitcoin Core through brew on my mac. The blockchain is now downloading but it's slowing down, so I would like to restart it. Can I abort the process and restart it and will it pick up ...
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3 votes
1 answer
79 views

How to configure bitcoind to wait for X confirmations to make the payment submitted

I'm using bitcoind for an ecommerce website. Walletnotify setting in bitcoin.conf only fires twice (once the payment appears on the network and then when the payment is confimed the first time by a ...
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0 votes
1 answer
61 views

What happens to the bitcoin mining if the device changes? [closed]

First I've opened this site via mobile and registered with a Google account. Some time later, I continued to mine bitcoin through my laptop with the same account. Will this device change make it ...
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0 votes
2 answers
74 views

Transaction amount for bitcoin payment gateway

I'm trying to add bitcoin payment for my ecommerce website. I have installed bitcoind on the server and i've set the notify wallet parameter in bitcoin.conf. the issue i have now is how to know that ...
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1 vote
3 answers
452 views

How nodes solve cryptographic hash by random guesses in bitcoin network [duplicate]

I searched for a lot. Previous answers on the bitcoin stack exchange did not answer my question. Well, According to my research, Any node can collect a set up unconfirmed transactions into a block and ...
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1 vote
1 answer
763 views

does Bitcoin Core automatically use reindex when you specify txindex=1 with existing sync'd chain?

I sync'd a bitcoin node with Bitcoin Core Qt GUI. Hundreds of GB, naturally. I realized I needed txindex on for Lightning node stuff, so I changed the conf file via the GUI to include txindex=1. I ...
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0 votes
1 answer
46 views

Running both bitcoind and bitcoin-qt for use with lightning

I've been toying around with bitcoin & lightning nodes. I like having the Bitcoin Core Qt GUI around for things, but also like being able to change specific configuration / startup flags (maybe ...
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1 vote
1 answer
144 views

RPC security of bitcoind node

If I have a fairly default bitcoin.conf file, let's say: rpcport=8332 txconfirmtarget=6 ie: notably one where I don't specify things like rpcuser, rpcpassword - is this insecure? As I understand, ...
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2 votes
1 answer
515 views

How to generate valid BTC address to withdraw coins to

I set up bitcoind, and the complete blockchain is synced. I created a wallet, and I loaded the wallet. How can I generate an address to deposit BTC to? I tried bitcoin-cli getnewaddress and I get this ...
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3 votes
1 answer
62 views

Compiler optimizations for self-compiled Bitcoin Core

If I compile Bitcoin Core using the instructions in the README, does the C++ compiler use compiler optimizations for my current CPU, or will it output a "generic" binary, that can run on ...
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0 votes
1 answer
26 views

Can I see transactions in bitcoin-qt without downloading blocks? if I have a server with blocks on the local network?

I have server with bitcoind (synchronized), port 18443 opened. And I tried to connect to rpc server with bitcoin-qt in my mac. With this configuration: regtest=1 rpcuser=<login> rpcpassword=<...
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0 votes
1 answer
38 views

Specification of REST .bin format?

I'm currently using the JSON Rest API to get lots of transaction data from bitcoin. Unfortunately thats quite slow. I know there is also a binary format (see Unauthenticated REST Interface), but I ...
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1 vote
1 answer
149 views

Bitcoind to use static RPC authentication cookie from file?

I'm running bitcoind 0.20.1 inside a Docker container and would like to access its RPC interface from another container. I have put an authentication cookie into a Docker secret and mapped it to /run/...
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  • 539
1 vote
2 answers
316 views

Bitcoin Core for ARM-based Macs?

Should we expect in the foreseeable future a Bitcoin Core release optimised for ARM-based Macs?
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  • 362
1 vote
2 answers
153 views

Partially Signing multisig rawtransaction returns redeemScript/witnessScript does not match scriptPubKey

I want to partially sign a rawtransactions using bitcoind through RPC but I am really stuck almost at the end of the process when I try to sign my manually created raw transaction and I spent many ...
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3 votes
2 answers
419 views

Reproducible Gitian Builds .. but not the same hash as bitcoincore.org

Bitcoincore.org and Bitcoin.org will let you download a tarball for bitcoin v0.20.1 When they do it bitcoind: 4ec74161b2a90293926ae8e20a2efbe952bd23b53aeebf051e6a6285ace18271 bitcoin-0.20.1-x86_64-...
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1 vote
1 answer
105 views

Bitcoind walletnotify runs only when transaction get it's first confirmation

I've successfully configured bitcoind and walletnotify to run on every deposit transaction in testnet. The problem is walletnotify hits only when a transaction gets its first confirmation and nothing ...
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1 vote
3 answers
565 views

The best JavaScript libraries supporting Bitcoin Core?

I have downloaded and installed Bitcoin full node on my Linux server and I'd like to start working with the bitcoin core to create wallet, addresses, and transactions. What is the best JS libraries ...
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4 votes
1 answer
96 views

How can I reproduce the same binary as bitcoin.org or bitcoincore.org?

I'm hoping that someone can tell me how to get the same binary that we see on bitcoincore.org/bitcoin.org. I tried using Ubuntu 20.04 git clone https://github.com/bitcoin/bitcoin git checkout v0.20.1 ...
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1 vote
0 answers
312 views

Getting "N5boost10filesystem16filesystem_errorE" error when running bitcoin-cli

Backstory I'm running Bitcoin Core 0.20.1 on a Raspberry Pi 4 (running Raspberry Pi OS standard). It's just a standard install of Bitcoin Core, I built from source and installed into /home/pi/.bitcoin ...
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  • 111
0 votes
2 answers
78 views

Why is bitcoind removing keys from keypool?

I opened my laptop which always has bitcoind running and my log is going ballistic with messages like: 2020-11-05T12:41:57Z [FullyNoded-d703055f46595edcf8163916bd906f9563afc0903fbe74c2882a93c59359ca00]...
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  • 382
3 votes
1 answer
682 views

When does Bitcoin update the UTXO set?

I am kind of confused with something. I hope you can clarify it for me... Let's say I want to make a transaction. So my exchange wallet does that for me. The way it does this is it first grabs the ...
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2 votes
1 answer
120 views

how does merkle root building work for empty array?

It's known that even if no transactions get created, bitcoin still creates a block with empty array of transactions. In this way, I am curious what the merkle root would be. How does bitcoin figure ...
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0 votes
1 answer
139 views

how does bitcoinjs-lib grab utxo

So, Let's say I want to create a transaction by using bitcoinjs-lib. As far as I can see, this library doesn't provide the help so that it can automatically figure out/grab unpent transactions for ...
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0 votes
1 answer
48 views

Is it possible to forward signed transaction using bitcoind prune mode?

Summary: Is it possible to perform createrawtranscation , signrawtransaction and sendrawtransaction rpc call using bitcoin in prune mode? Detail : I want to implement an API that performs p2p BTC ...
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  • 524
1 vote
1 answer
225 views

Permission denied when attempting to backup wallet using backupwallet

When I call bitcoin@raspberrypi:~ $ bitcoin-cli backupwallet "backup.dat", I get the following error: error code: -4 error message: Error: Wallet backup failed! ~/.bitcoin/debug.log shows ...
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1 vote
1 answer
483 views

How would you create child pay for parent in bitcoind-cli

I have unconfirmed transactions in my bitcoind wallet. Some of the are mine and some are incoming third party transactions. I want to speed up their confirmation by creating CHPFP transaction - ...
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1 vote
1 answer
142 views

Bitcoin Core ZMQ "hashTx"

Bitcoin Core ZMQ messaging system has hashtx along with 4 other topics. But nowhere it is documented whether the transactions that comes from hashtx are confirmed transactions which are added in a ...
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