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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).

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1answer
91 views

Share balance between lnd and bitcoind

I have a bitcoind instance with some balance. When I run lnd (which is connected to this bitcoind instance) it seems to use its own wallet. Is there any way I can use lnd with the bitcoind balance ...
1
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1answer
295 views

Whats the difference between “txid” and “hash” - getrawtransaction bitcoind

Sometimes the txid key is the same as the hash key in the return of getrawtransaction, sometimes different. I'm trying to understand more about these... What are the differences, and why are they ...
0
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1answer
121 views

Can't specify rpcport for testnet

Was there a recent change where it is no longer possible to specify rpcport? I noticed these two warnings: Warning: Config setting for -addnode only applied on test network when in [test] section. ...
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1answer
66 views

bitcoind getrawtransaction has no value for vin, what am I doing wrong?

I’m able to get the value for vout but my node is not returning the value for vin, how do I get the value for vin?
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1answer
124 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
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1answer
83 views

What does this comment in Chainparams.cpp mean?

There is a comment in the Bitcoin source code under src/chainparams.cpp /** * Build the genesis block. Note that the output of its generation * transaction cannot be spent since it did not ...
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3answers
116 views

bitcoind getrawtransaction returning numbers and letters

I’m not sure how to get this data in a format I can use and consume? I was expecting some kind of JSON structure, hopefully there’s a way to get this info easily?
1
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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....
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2answers
178 views

Bitcoin regtest mining

I wonder if I can do mining with Bitcoin-0.16.1 in regtest mode, just for simulating mainnet situation where there are new blocks coming in constantly. I am aware that I can use generate to generate ...
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0answers
118 views

Last PoW block fork masternode coin

I'm learning about the blockchain by creating a proof-of-stake coin. I forked whitecoin (fork of blackcoin), and made some modifications to make it easier to play around with: nLastPOWBlock = 1000; ...
0
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1answer
205 views

How to Connect already running bitcoind in AWS to Insight API in different AWS Server

Need to create a bitcoin explorer using bitcoind. I am using bitcore and insight API for this purpose. Currently running bitcoind in AWS Server with all port open. Need to connect this running ...
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0answers
41 views

reindex zcash syncing issue

I have installed zcash-bitcore-node & follow this site https://www.npmjs.com/package/zcash-bitcore-node. It started syncing by using sudo zcash-bitcore-node start, but when I stop zcash server it ...
0
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1answer
35 views

lot of bitcoinj clients have connected to me

Looking at my peers list in the debug window for my node, I can see that a lot of bitcoinj clients have connected to me. Is this any cause for concern?
1
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1answer
146 views

Bitcoin RPC returning 401

I am using node-bitcoin-rpc to do some api calls to bitcoind, but I am getting 401 error. I know this simply means unauthorized, but I have no authorization enable in my config file. Howerver I can ...
1
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2answers
176 views

How to migrate bitcoin node from one computer to another

IN my old computer some addresses have bitcoin and it is showing on blockchain. When i am trying to get balance of the same addresses in my new computer where i have synced bitcoin full node ,I ...
0
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1answer
155 views

bitcoin public key vs public key hash vs. pub key [duplicate]

I am not talking about the privacy related concerns just the security aspect and the ability for someone to 'break my private key'. The addresses that my wallet generates are p2pkh addresses. If i ...
0
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0answers
141 views

Having trouble syncing blockchain

I'm running a Bitcoin and LND node on my Raspberry Pi and had it up and running successfully for a few months now. However, I've just changed routers from a Netgear N900 to a Google Wifi Router and ...
0
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0answers
94 views

Bitcoin Address Transaction notify service in bitcore node or insight api

[Updated] I am developing one bitcoin buy, sell, withdraw and deposit online platform for one of my client and I stuck in middle of it for Deposit BTC module. I do have set up bitpay 'Bitcore Full ...
2
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2answers
43 views

How to watch lots of wallet addresses for new bitcoin transactions?

I need to watch many wallet addresses for new bitcoin transactions as they enter new blocks. I also need this transaction data to make updates on my end What are my options?
0
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1answer
154 views

Bitcoind walletnotify

Does wallet notify performs actions also on old transactions? In case that my node went offline for some reason, Once its back online I will get notifications from wallet notify for the transactions ...
0
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1answer
166 views

Connecting to Regtest

I want to connect to a local node that I have set up in regtest mode using bitcoind. The node I am connection from is non bitcoind and I need to set the port that I want the peer discovery to take ...
0
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0answers
108 views

Bitcoin Core install on Inmotion Hosting VPS server failing

I'm trying to install a full node on a VPS instance of Inmotion Hosting linux server. I have no issues with downloading and installing the Bitcoin Core files from Bitcoin.org, but upon trying to start ...
1
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1answer
23 views

Are redeemScripts private?

When I do createmultisig in bitcoin core, I get the redeemscript as output. I of course want to save this information, but can I put this in my regular database or do I need to take extra precaution ...
0
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1answer
370 views

What is the right way to restart bitcoind if it crashes?

I am very new to this and apologies if it has been asked before but I can't seem to find a clear answer after looking extensively. I am trying to run a full node. I started bitcoind -daemon and ...
1
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1answer
300 views

Run bitcoind as a service in windows

Motivation I don't want to have to have bitcoin-qt running. I want the control and error handling capabilities that come when something is running as a service. I want bitcoind to start when windows ...
2
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1answer
215 views

Issue with getrawtransaction txindex and reindex

I am running Bitcoin Core Deamon version v0.16.0.0 on Ubuntu and need to call the getrawtransaction command for some TX. To use the getrawtransaction I need to run bitcoin core with txindex=1. But ...
0
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1answer
672 views

How to run BitcoinCash node?

How to install and Launch Bitcoin Cash daemon on machine? I have already synchronized full BitCoin node, Here is the link bitcoin.org from here i learn how to setup BTC node I also want to run ...
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0answers
23 views

Bitcoin Paymen php

How to check when a address get paid in php . I m using this to get api into php and $rpcUser = "wallet1"; $rpcPass = "12345"; $url = "http://localhost:8888"; $epic = new Bitcoin($...
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0answers
33 views

Running a full node in the cloud - on top of FUSE/s3 filesystem

I'm trying to figure out the cheapest way to run a full node in the cloud (specifically AWS). In terms of compute resources, a t2.nano should probably be enough, after the initial syncing of the ...
0
votes
1answer
29 views

which indicates the correct total received bitcoins, blockchan.info or bitcoind [closed]

I'm trying to see how much bitcoins I've received via bitcoind's one method, getreceivedbyaddress specifying a certain address, and after knowing the amount of bitcoins, I soon realized that such as ...
0
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1answer
37 views

Bitcoin RPC Call [closed]

I want to monitoring 3000 address continuously for BTC. So I am using third party API for get BTC balance. but all API has limitations for access. Can I get an API reference where I can call API ...
1
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0answers
37 views

How can a miner know how many blocks mined by him?

I am working on an altcoin based on bitcoin-core, version 0.12.1 (this version including setgenerate). Is their an option for a miner to know (using bitcoin-cli) how many blocks mined by him (after ...
0
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1answer
218 views

How to Get Unspent Transaction Outputs from Node

There is one API called listunspent, however it doesn't return any outputs, and some threads say that it may be because the address is not imported into the node's wallet. Then how to retrieve the ...
0
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1answer
39 views

How to create (many address)/receive/send bitcoin without download blockchain?

I need to create a lot of address on my wallet to get bitcoin. Check balance and make transfers. I do not have a hard disk of 200 GB, can I use bitcoin without downloading the blockchain? Need ...
0
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1answer
59 views

Can I generate an address without using bitcoin core?

I am running bitcoin core in my mode. I am using getnewaddress to generate an address and then I am using unspent to get the unspent of an address which returns the unspent successfully. If I created ...
2
votes
1answer
204 views

Can we derive parent’s private key using child’s private key?

In the book named Mastering Bitcoin by Andreas, the author described the usage of derived child keys. One thing I noted was that he said(page 108), The derivation function is a one-way function, ...
0
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0answers
123 views

Practical Implementation of Liquidity Provider for Crypto Exchange

I understood about the basics of the liquidity provider ,but I wanted to know about what are the ways to provide the liquidity provider for my exchange. Do I need to practically implement it? How can ...
0
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1answer
192 views

How to get public and private keys by giving seed explicitly?

I am using bitcore to generate the public and private keys. I am using 'getnewaddress' method to generate a public address and dumpprivkey to generate a private key. When I am calling the ...
0
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2answers
69 views

Providing Liquidity in CryptoCurrency Exchange!

Can anybody give some idea about the issue of providing liquidity to the users for creating a cryptocurrency exchange ? Thanks!
0
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1answer
95 views

Bitcoin core: connect to specific peers from file

I want to launch Bitcoin core connecting to a specific list of peers. I can do this using connect: bitcoind -connect=<IP1> -connect=<IP2> Is there a way I can put the peers I want to ...
2
votes
0answers
137 views

How to hard fork a altcoin? [closed]

I have created a altcoin using the reference of LTC and already 170k blocks were formed. Now i want to change the conformation time as well as i want the difficulty to start from base difficulty....
0
votes
3answers
63 views

How to do atomic swap with bitcoin?

I have read about the ATOMIC SWAP, I could find only the concept level and could not find technically. Is there any doc about atomic swap to achieve that technically and code sources to achieve this.
1
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1answer
47 views

What are the ways to secure bitcoin daemon on linux?

I just integreated mining pool on my server. which means miners connect to my pool and get paid. before they get paid, it goes to my address and that address is located in bitcoin daemon. What are the ...
0
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0answers
55 views

How does Bitcoin 0.16 affect mining pool development, especially the introduction of BIP173 (Bech32)

I am developing a Bitcoin mining pool . I am using getBlockTemple to get from Bitcoin node, the template including the transactions and default witness commitment. I am using the following options ...
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0answers
41 views

Can anyone help me broadcast my IP ln the lightning explorer testnet

I have my lightning node set up but I my IP isn't broadcasting
0
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0answers
164 views

Get value from leveldb bitcoin using node.js?

I request information about the block 100001 using leveldb and node js. Below is my code example. var level = require('level'); var db = level('E:/download/blockchain/block'); var str = '...
1
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1answer
244 views

Bitcoind estimatesmartfee

I am trying to get transaction fee for sending all btc to another account. I use estimatesmartfee to get tx fee, I have total btc amount of 0.0195btc, so I pass 0.0195, but I get JSON integer out of ...
0
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3answers
208 views

bitcoind sync time incredibly slow

I am currently running bitcoind v0.16.0.0 on my macbook (osx 10.12.6) and the initial sync time is really slow. I'm syncing at roughly 88 blocks per hour which would mean it would take another 2 ...
2
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1answer
82 views

Does running a full node make rpc calls faster?

Hello I am running a pruning node on my VPS, and some of the RPC calls such as get balance take minutes to load. I need to check the balance every time the users access the website. I was wondering if ...
0
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1answer
166 views

python bitcoin public key to address code error

import hashlib b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' def hex_open_key_to_hex_hesh160(hex_open_key): h160 = hashlib.new('ripemd160') h160.update(hashlib.sha256(('04'+...