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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).

0
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1answer
13 views

in transaction, what is 'hash' data?

i'm studying Bitcoin: A Peer-to-Peer Electronic Cash System Satoshi Nakamoto and this paper introduce a transaction model. (above picture) but i don't understand what is 'Hash' means exactly i ...
0
votes
2answers
707 views

Is it possible to use bitcoind as a private blockchain?

For development or test purpose, is it possible to setup a bitcoind as a private bitcoin blockchain?
1
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1answer
13 views

What are the network requirements of running a bitcoin node?

I have been hosting my bitcion node in a simple Kuberenetes setup (without istio). I recently learnt about istio https://istio.io/ and want to use it for hosting my bitcoin node. However, I am not ...
0
votes
2answers
54 views

how bitcoin reject invalid transaction? (with createrawtransaction)

i'm studying 'Mastering Bitcoin' and have a questions, in this book, we can send coin to other wallet by createrawtransaction but there is no enough secure method. we can find other's wallet ...
0
votes
1answer
200 views

Sendrawtransaction error with locktime : 64: non-final txid

I have created raw transaction with locktime and sign it. The lock time is already passed but still got error like this when sendrawtransaction 64: non-final txid the locktime value is 1523515709 ....
3
votes
3answers
43 views

Does a bitcoin node broadcast that it is full synced?

When a bitcoin core node is fully synced, does it broadcast to the rest of the network that is has finished syncing? If yes, where in the bitcoin-core source code is this implemented?
4
votes
3answers
579 views

Does running pruning node make the initial sync faster?

Does running bitcoind with -prune option make the initial blockchain sync faster or not? I know it makes it smaller on disk, but is it faster? I keep reading conflicting information online - some ...
3
votes
1answer
139 views

What is the safest way to rename my altcoin from “bitcoin” to “myaltcoin” in the source code?

Some Context I am creating my own altcoin for learning purposes and have successfully built the bitcoin code from source with my own genesis block. Now is it time for me to change the name of the ...
0
votes
0answers
24 views

Bitcoin Address Index, now that Bitpay/Bitcore is not reliable

Other than Bitpay/Insight-UI, are there other tools that index addresses from the Bitcoin blockchain. I want to be able to query the index like this "https://btc.com/...
0
votes
2answers
29 views

Should I run crypto node for my trading platform?

I wanted to create a cryptocurrency trading platform where people can deposit cryptocurrency and trade them with other altcoins and finally withdraw it. Tell me do I need to run full crypto node to ...
-5
votes
1answer
33 views

Can I modify bitcoin as per my requirement?

I have taken bitcoin code,and have builded the coin successfully, now i want to change the parameters of my coin so could it possibe suppose i want to define parameters like i want to generate total ...
0
votes
2answers
289 views

How to decode the block hash?

I got the block hash from zmq. 00000000000000000045c639280aee532c5b12b03c80bfdec7aae674fd8246e0 I want to decode the above block hash. Could anyone tell me how to decode the above block hash?
6
votes
2answers
234 views

What would be the fastest way to query for a certain txid to get its inputs?

I am working in an artistic/visualization project that analyses Bitcoin transactions. I have a Bitcore instance with insight API and from a Python script I query through the REST API so the queries ...
0
votes
2answers
429 views

how to run multiple bitcoind node on one server?

I have created one full node bitcoind on my VPS, that one is serving application A. Now I want to create application B that has another node but on same VPS. is that possible to install multiple ...
0
votes
1answer
15 views

getrawtransaction not working for 0th BTC block transaction

I am trying to insert BTC blocks and transactions in MONGODB collection from count 0 using Python3. getrawtransaction is giving output for block 1 but not for block 0. Can somebody help me why this ...
1
vote
2answers
37 views

how to set the transactions fee using the RPC call?

I am creating the web wallet for the bitcoin , I want to allow web wallet users to set the transactions fee . Is their is any rpc call available for setting the transactions fee (for setting ...
-2
votes
0answers
17 views

bitcoin-0.8.1 version how to generate exe file

i am try to get the exe file from bitcoin-0.8.1 version .In bitcoin latest version we can get easily exe file but bitcoin-0.8.1 version its not like latest version so if anyone can help to generate ...
0
votes
1answer
49 views

Create wallet address on user registration for trading platform

I am creating a crypto-trading platform . I wanted to know how to create wallet address dynamically for all new registered user and also create new address for every transaction. I am using bitcoind ...
2
votes
1answer
738 views

bitcoind crashing due to insufficient memory?

EDIT 3 Bumping my VPS to 1GB of physical RAM stopped the crashing issue... UNTIL said VPS ran out of disc space. I added prune=10240 to my ~/.bitcoin/bitcoin.conf file such that the blockchain file ...
0
votes
1answer
132 views

Use json-rpc without full blockchain

So i want trying to use both bitcoin and bitcoin-abc json-rpc on raspberry pi but they will overload the whole pi when downloading and sync @ same time. So is there anyway to use json-rpc without ...
5
votes
1answer
316 views

bitcoind and rollntime support

According to this page: https://en.bitcoin.it/wiki/Poolservers bitcoind's rollntime support is 'Supported, but not advertised'. I am taking that to mean that it doesn't provide the X-Roll-NTime ...
0
votes
3answers
84 views

how to get confirmations about many transaction at once using bitcore node or bitcoind rpc?

how to get the confirmations of many transaction at once using bitcore node or bitcoind rpc? I think it's possible to get the confirmation of a single transaction using getrawtransaction of bitcoind ...
0
votes
2answers
664 views

How do you change rpc password?

I'm trying to run bitcoind with a changed conf file, but for some reason the password it thinks is incorrect. Is there a way I can change the rpc username and password?
6
votes
3answers
7k views

How can I export all my private keys using bitcoind?

I know that PyWallet has a -dumpwallet but without using pywallet, how can I export all the addresses and privatekeys with the stock bitcoind? Is there an API command that lists all addresses held by ...
0
votes
1answer
55 views

Web wallet making direct RPC calls to bitcoin node

Is it good idea to make direct RPC call's to node computer to generate web wallet addresses here is what i am trying to implement i want to create new web wallet based on bitcoin and want to allow ...
0
votes
1answer
1k views

Transactions confirmed on Blockchain but nothing received to my Blockchain wallet

I need some info/help. I have sent some Bitcoins to my Blockchain wallet. They have all be confirmed and done with. But it has been 2 days now and nothing has shown on my wallet. This is the ...
0
votes
2answers
580 views

electrum wallet help needed funds missing

I have a problem and not sure if it’s a hack or my back up has not worked. I was sent a laptop replacement and asked to send the old one back on the warranty so I was removing all my stuff across, I ...
0
votes
1answer
210 views

Import private key to bitcoind

I have a bitcoin testnet account in copay wallet. I want to import its private key in bitcoind. So, I exported the private key, but they were encrypted. I got a Test-Copaybackup.aes.json file. ...
1
vote
1answer
97 views

RPC Command to send from multiple accounts to one account (default - “”) in same wallet

I have small amounts in multiple accounts in the same wallet. I want to send all of them to default account (usually named as ""). Is their any RPC command available for this scenario? Thanks in ...
10
votes
1answer
8k views

How to add additional information to transaction?

I want to add some additional information to my specific transaction, so that I can send the additional information to blockchain.
2
votes
2answers
2k views

jsonRPCClient.php states its served a 401 error response

When I execute my php file from the command line I get this: <pre> PHP Warning: fopen(http://...@127.0.0.1:8332/): failed to open stream: HTTP request failed! HTTP/1.0 401 Authorization ...
0
votes
1answer
137 views

Run bitcoin and Omni on same machine

I'm currently running a bitcoin full node and would like to run the omni full node as well separately. I want to have 2 different datadir and I guess I need the omni full node to use a different port (...
2
votes
1answer
937 views

Can't connect to Bitcoind remotely

I am running a Bitcoin Cash node on my server, and starting it like this: start bitcoind.exe --server=1 --rpcuser=user --rpcpassword=password --rest=1 --rpcport=8332 --datadir=F:\Bitcoin --bind=10.1....
0
votes
1answer
47 views

Prompting an account name

I made an account "hello" in bitcoin daemon and wanted to run this. Whenever i put in hello when prompted, getac1 would return empty array; whereas, getac2 and getac3 returns addresses associated with ...
0
votes
1answer
155 views

Bitcoinj unable to load wallet

So I want to load a wallet and get its balance also sending some funds with the corresponding wallet, here is my code public class DumpWallet { public static void main(String[] args) throws Exception ...
1
vote
1answer
27 views

Could bitcoind support SPV mode by setting different args

There are multi nodes type could be used in bitcoin network. Could bitcoind support running different types of nodes by different sets of args? I found many discussion here, but seems no clear ...
0
votes
1answer
218 views

Zcoin insight setup in ubuntu system

I have tried to installed zcoin insight ui & api in my local machine (ubuntu OS) and it is completed all the steps but I m facing issue while start services in frontground. Let me share with you ...
1
vote
1answer
27 views

How to move sync's data to another partition after run Bitcoind for a while?

I have download a new bitcoin package from official site. And then I ran it with daemon mode also with default configuration (Default means not bitcoin.conf file was created in ~/.bitcoin/.bitcoin....
0
votes
1answer
20 views

addnode vs seednode

Could someone please elaborate on the difference between the addnode and seednode settings in the bitcoind configuration file. -addnode=<ip> Add a node to connect to and attempt to keep the ...
0
votes
1answer
76 views

Error getting bitcoin block to process from DB

i am installing a full node on a linux server and i'm trying to connect to bitcoin with BIFROST(https://github.com/stellar/go/tree/master/services/bifrost) but i am getting the error below which ...
2
votes
1answer
469 views

How to get total number of transactions from bitcoin core wallet using rpc

I'm trying to implement paginations using : https://chainquery.com/bitcoin-api/listtransactions I want to have reverse listing (oldest first), so I need to get total number of transaction returned ...
4
votes
1answer
898 views

Debugging bitcoind

How do you attach a gdb to a bitcoind daemon. I wish to step through the functions. Here is what i have tried. gdb --args bitcoind -regtest -daemon This however exists when the daemon starts. So i ...
7
votes
2answers
474 views

How to get notification on bitcoin receive with bitcoin core

How can I get Bitcoin receive notifications with Bitcoin Core. I have tried the walletnotify and blocknotify options. walletnotify is fired two times when I send or receive bitcoins. And with ...
0
votes
1answer
24 views

EXCEPTION: 15dbwrapper_error

I'm running Bitcoind 0.17 on a raspberry Pi 3. Everything ran smoothly until I did something wrong (I guess) but can't figure out what happened. Now I got this error. Has someone experience with this ...
6
votes
2answers
7k views

To run bitcoin core testnet on Ubuntu 16.04

How can I run Bitcoin core testnet version on ubuntu 16.04 platform ? I am getting so many reference about how to run bitcoin core mainnet but it will take around 20 days to synchronize with the ...
0
votes
1answer
212 views

Is it possible to make transaction using wallet private key

I have a private key of a bitcoin wallet . Is there is any way i can check balance and make transaction using bitcoin core without importing private key.
6
votes
2answers
577 views

bitcoind and onion listening

I would like to get Bitcoind to advertise that it is listening on an onion address. However, I do not want to have Bitcoind use a tor socks proxy to connect. I have a special router for tor ...
0
votes
1answer
76 views

Deposit flow, user balances

I am a working on website where people should be able to deposit BTC to thier account balances and then do something with these balances. I figured out that I need deterministic wallet and generate ...
1
vote
1answer
123 views

Failed to start lnd.service: Unit bitcoind.service not found. (lnd installation)

I installed my bitcoind and lnd correctly. I put my datadir=/mnt/vdb to bitcoind.conf file and it allows me to start bitcoind with this command: bitcoind -daemon. As a final step, I want to learn lnd ...
-1
votes
0answers
23 views

Insert BTC blocks and transactions in mongodb

I am trying to insert bitcoin transactions into MongoDB using python3. Below is my code : import pymongo import sys import json import time from bitcoinrpc.authproxy import AuthServiceProxy, ...