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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7 views

When pruning starts to take effect during reindex?

This question is about Bitcoin SV, but since it uses a fork of bitcoind, it should be the same. I'm about to turn on pruning on other daemons, like Bitcoin itself, but I don't understand some issues ...
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2answers
133 views

Bitcoin-cli responding but not curl

According to the bitcoin documentation I can make curl calls to my bitcoin node. However, whenever I run a curl command like the following (as per the docs): curl --data-binary '{"jsonrpc": &...
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1answer
27 views

Lost Bitcoins Help [duplicate]

years and years ago I invested in bitcoins and I also got some free for signing up somewhere and since then I have had a new phone and don’t even have that computer anymore so now I am unsure of how ...
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Umbrel stuck when using symbolic links to bitcoin blockchain data

I tried to make Umbrel run on Ubuntu 20.04 with the bitcoin core beeing preinstalled and synced. I made it run on two harddrives. First one is an SSD where the system runs on and second one is an HDD ...
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74 views

Best way to store private key from address

I make my own hot-wallet and wanted to know best way to store private key from address, because I need it for signing transactions. I tried store private key in my bitcoin core node, but I realized ...
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1answer
20 views

bitcoind resumes from low block after restart

I have bitcoind full node running, that is usually fully in sync with the chain. However, if it is restarted, e.g. due to machine reboot, it does not start from the top of the chain, but from somewhat ...
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23 views

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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26 views

What is the list of blocking RPC calls in bitcoin?

I would like to get a list of blocking rpc calls in Bitcoin Core. For example importmulti is a RPC blocking call and I would like to know the full list
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2answers
46 views

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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2answers
42 views

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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1answer
49 views

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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1answer
43 views

"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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1answer
36 views

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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47 views

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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1answer
25 views

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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2answers
61 views

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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1answer
61 views

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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44 views

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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1answer
17 views

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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1answer
58 views

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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1answer
42 views

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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1answer
50 views

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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1answer
38 views

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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0answers
72 views

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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36 views

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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52 views

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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1answer
40 views

Inactive nodes, validation & 51%; full & partial nodes; validation by miners vs wallets

Questions Suppose a node doesn't have internet connection then it would not receive the broadcast of other nodes then does the blockchain propagates without the validation of that node ( that is, is ...
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38 views

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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1answer
27 views

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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1answer
57 views

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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44 views

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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1answer
18 views

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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19 views

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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31 views

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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0answers
60 views

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 ...
1
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1answer
39 views

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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23 views

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 ...
1
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1answer
71 views

Bitcoin core initially downloads IBD quite fast , then it slows down a lot , What could be the reason?

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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34 views

How to parse output from getblocktemplate in python?

I am able to connect to testnet and make a RPC call to getblocktemplate , but stuck at the point as how to parse the output to start minining . I referred to https://github.com/luke-jr/python-blkmaker ...
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39 views

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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0answers
27 views

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 ...
0
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1answer
105 views

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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0answers
19 views

Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet [duplicate]

Is there a way to list Unspent transactions for a BTC address that is not part of the Wallet, without importing the address to Wallet. I am looking for a rpc function similar to listunspent which is ...
1
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1answer
67 views

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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25 views

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 ...
2
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1answer
114 views

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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26 views

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44

I am working on a Bitcoin HD Wallet implementation in C#, Trying to build a HD Wallet offline for subscribed users following BIP44. Is there a way use a remote node for looking at the Received ...
0
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1answer
31 views

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, ...
1
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1answer
58 views

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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0answers
18 views

What is upgrade fee in trading?. Is it necessary to pay? [duplicate]

I trade in standard crypto trading.. initially I trade for $100.. After they asked me to pay $300.. And said then only I can receive my profit.. after they said trade completed.. and I received profit ...

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