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Questions tagged [bitcoin-core]

This tag should be used for questions pertaining to Bitcoin Core. Bitcoin Core is an MIT-licensed Qt 5 GUI application for the original Bitcoin codebase. Additional/previous names include "Bitcoin-Qt", "Satoshi-Client", and "Standard Client". This tag should be used when referring to the Bitcoin Core software.

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1answer
187 views

Can a ZCash shielded/deshielded transaction have values for both vpub_in and vpub_out

As I understand, Zcash shielded and deshielded transactions use a JoinSplit when converting notes from shielded to transparent (and vice versa). vpub_old - is the value that the JoinSplit transfer ...
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1answer
151 views

I have a old version of Bitcoin QT on Apple

Which I think is about 3 years plus old but it was on my old computer which died. I have now recovered the drive at the bitcoin-qt application but it won't run on my current computer either due to the ...
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0answers
46 views

Creating a “listunspent” API call using MongoDB

I used a tutorial online to create my own block explorer (https://www.youtube.com/watch?v=laeV2slJgc8). In this tutorial, I used "Iquidus" to create the block explorer, which uses MongoDB and Node....
2
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1answer
1k views

How can I accelerate confirmations in ledger nano s?

I am using Ledger Nano S hardware wallet to store my bitcoins. Last week, for an experiment, I decided to send bitcoins to hitbtc currency exchange with zero btc fees. I was wondering how many hours ...
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3answers
73 views

Storage exceeded in middle of synch

A friend gave me a few bitcoins a number of years ago. Yesterday, I read an article about bitcoin and it reminded me I had some. I went online to check the value and to possibly spend them. I tried to ...
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1answer
70 views

How does bitcoin core save raw transaction data?

I had a few questions. I've looked extensively online and can't seem to get answers right on point. I just started a full node using bitcoin core and it is currently syncing/validating the past ...
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1answer
493 views

Bitcoin Transaction Stuck, Attempt to double spend with higher fees

I made a BTC transaction a few days ago, where I set the fee amount way too low. It seemed that the transaction was lost in limbo. I did some research, and apparently you are able to double spend ...
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3answers
2k views

Increase a transaction fee in bitcoin core

I marked my transaction with "Request replace-By-Fee"* in my bitcoin core wallet, and now while I can increase the transaction fee, I can only increase it by a tiny bit, and I can't set it to what I ...
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1answer
28 views

Should we wait 10 minutes to confirm a transaction [duplicate]

I have read this proof of work calculation takes about 10 minutes. That mean people who are making the transaction should wait 10 minutes ? Let's imagine i want to buy a drink with bitcoin. The ...
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1answer
67 views

Can I open many channels to one connection?

Trying to learn the Lightning Network :) Can I do something like this: STEP 1: Generate new addresses address_1 = cli/lightning-cli newaddr address_2 = cli/lightning-cli newaddr address_3 = cli/...
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2answers
1k views

How do I migrate my Bitcoin Core wallet to an HD wallet?

I created a wallet before Bitcoin Core 0.13.0 was released so my wallet is not a HD wallet. How do I make my wallet a HD wallet?
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1answer
17 views

Loading seed coins in test mode

I'm setting up a regtest node on my Windows machine using bitcoin-qt. Here's my config: regtest=1 txindex=1 server=1 [test] rpcport=8332 rpcuser=ulu rpcpassword=*** Next, I would like to run a ...
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0answers
24 views

What are the ways of receiving transactions list via Bitcoin address?

My team challenges an issue. Trying to support Bitcoin wallets in a messenger app and staying user-friendly, we need transaction lists to be receivable quick and nice. So users would not die waiting. ...
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1answer
81 views

CScript to CPubKey or derive CPubKey from CScript

Please can someone advise if it is possible to derive the CPubKey from a CSript object? Provided i get it up with an address before hand, I can use numerous functions to attain all the info from the ...
2
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1answer
46 views

Why doesn't the Bitcoin-qt client ask for the Wallet passphrase upon startup?

I've just encrypted my wallet.dat file using the "Settings -> Encrypt Wallet" menu option. I then closed the client and re-opened it. I was expecting to be prompted to put in the wallet password ...
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1answer
49 views

bitcoincore additional questions

Following up from my previous question, I still have some questions left. Does it really work if I turn off the internet before doing getnewaddress? Will it really give me something real and can get ...
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1answer
276 views

Watch only address not update balance

After adding watch only address to my bitcoin core and perform some transaction that make my watch only address balance to 0, but when i run getbalance and listaccount with watch only is true, my ...
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1answer
44 views

Running bitcoin node with already verified blockchain

I'm following this guide https://stadicus.github.io/RaspiBolt/ to setup a bitcoin full node on my new raspberry pi. I already downloaded and verified the blockchain on my host machine. I also pruned ...
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1answer
47 views

gettransaction cannot get address where it send from

Hi i have test few time with gettransaction method, it seem only show full detail about transaction when send inside node. But if i send from another address outside my node, gettransaction only show ...
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1answer
94 views

bitcoind and bitcoin-cli and bitcoin-qt

following the hackernoon for full node btc, https://hackernoon.com/a-complete-beginners-guide-to-installing-a-bitcoin-full-node-on-linux-2018-edition-cb8e384479ea i have some small questions, is there'...
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0answers
19 views

MacOS: How to run Bitcoin Core GUI after building from source?

I built Bitcoin Core from source by following this guide: https://github.com/bitcoin/bitcoin/blob/master/doc/build-osx.md And got it running on the command line via: ./src/bitcoind Screenshots from ...
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1answer
61 views

Virus warning in Bitcoin [cash] ABC client?

I tried to download Bitcoin cash ABC wallet from bitcoincash official site. If I download zip to my computer and upload it to VirusTotal site, it says 11/62 positives. If I go to VirusTotal site and ...
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1answer
28 views

bitcoin node startup daemon with created wallet

When I restart the Bitcoin node, I would like to load the wallet I created in the "wallets" subdirectory. bitcoin-cli createwallet "1" bitcoin-cli listwallets -> result : "", "1" bitcoin-cli -testnet ...
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1answer
56 views

Bitcoin / Crypto and exchanges!

When we buy/ sell bitcoin through some exchange say "Koinex in Indian context", what is the process i.e. actually followed ? 1. Does exchange communicate to node(s) in the bitcoin blockchain thru my ...
2
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1answer
25 views

How run c-lightning with the local node bitcoin

I have a bitcoin-core-18.0 with on my linux mint, and I don't have downloaded the bitcoin with the ppa but I downloaded the official zip directory on site bitcoin. Now my question is, c-lightning ...
2
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1answer
652 views

Bootstrap.dat on Mac OSX 10.9 - Difficulty

Been trawling through a lot of information (I know this similar issue has probably come up a fair bit) on this issue and going round in circles a bit. I am not the most tech savvy individual, and ...
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1answer
99 views

Issue with sendrawtransaction missing inputs error code -25

Working with Bitcoin-qt 0.16.3 testnet Attempting to sendrawtransaction, however, receive following error: Missing inputs (code -25) From what I have read, this results from attempting to use ...
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0answers
24 views

Bitcoin Core Question, Initialization Vector

I am reviewing Bitcoin Core source code. I am following the code which states take a double sha 256 of the public key to get the IV and use the master key for the encryption key for encrypted wallet....
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1answer
627 views

Running a bitcoind docker

Thanks to the bitcoin.stack community I have successfully launched a bitcoind docker with an external volume which has the block data Currently its in 100% sync but I am facing an issue to get ...
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0answers
42 views

Checking my bitcoin wallet after two years I find that my bitcoin (0.5 bitcoin) is gone [duplicate]

After checking my bitcoin account after two years, 0.00010757 of a bitcoin remains even though I explicitly remember having half a bitcoin left. My first thought someone somehow stole it. But after ...
4
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1answer
48 views

Which parameters in the Bitcoin Core config file need to be set correctly prior to IBD?

The majority of the parameters in the Bitcoin Core config file can be changed during or after IBD (Initial Blockchain Download) with no complications. However, there are some parameters in the config ...
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1answer
92 views

Get input address using VIN txid?

I have written following script to get Vin address from Vin txids. #!/usr/bin/python # -*- coding: utf-8 -*- import requests,json url="http://asd:asdf@localhost:2332" payload={} payload = {"jsonrpc":...
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1answer
336 views

Did I lost my balance by using an old wallet.dat?

I saved a copy of my wallet.dat as a backup, i used it to transfer 1 btc to another address, now it's got 1 btc less in the total. now I deleted the wallet.dat and open the wallet with the saved ...
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2answers
30 views

Transaction from bitcoin core is different from the explorer

In tx 3a4a7087d4ece4503948b33aa77c807cda770575d229cbcb7dd8336ffa77445a the unique input is 1387e35f2c65f6664e15a98a43b7a70831e636635876a7154c99f38d89a9f795 with index vout = 1. When I request this tx ...
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1answer
74 views

Wallet shows 0.00000000 btc

I’m running a Antminer S9 for a week now Just today the wallet finally synchronised but shows 0.00000000 btc 🤔 why?
4
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1answer
345 views

Syncing bitcoin node with multiple cores

I'm syncing my node on 32 CPUs, and it's super slow. Obviously, syncing doesn't go in parallel. I wonder if there is any fundamental obstacle for "divide and conquer" way of doing it. So let's say ...
0
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1answer
106 views

Sync bitcoin transaction status to local database

I am sending bitcoin transaction in node js via bitcore-lib and bitcore-explorers. I realized that when i call the function .broadcast to send the transaction to network and returns value, it means ...
4
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3answers
62 views

Bitcoin core full node - Should I choose my peers or it's fine to use the hardcoded ones?

I have a full node v 0.17.1 running 12-14 hrs/day and I was wondering if it's helpful, for privacy or for whatever reason, to add peers (maybe from https://bitnodes.earn.com/nodes/leaderboard/) with ...
5
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2answers
817 views

bitcond and bitcoin-Qt system configuration and bandwidth requirements

What is the best operating system configuration for a computer to run (bitcoind or bitcoin-Qt) and (BFGminer or CGMiner) under Linux, assuming that it will be connected to a 3 Terrahash mining rig on ...
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1answer
1k views

How to send Bitcoin in the Testnet?

I'm using this library: https://github.com/lian/bitcoin-ruby And here's my code: require 'open-uri' require 'net/http' require 'net/https' require 'json' require 'bitcoin' Bitcoin.network = :...
7
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1answer
6k views

How can I benefit by running a full Bitcoin node?

I noticed that I can run a node with Bitcoin Core. If I open my computer always and make the full node run on my device, what benefits can I get? Is there any reward for serving this?
2
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1answer
126 views

Upgrade from Bitcoin QT 0.8.5 to latest Bitcoin Core 0.15.X

I bought and transacted BTC in 2013/2014. I had a Bitcoin QT 0.8.5 wallet. I plugged it in and it updated correctly to the latest block. It correctly showed my BTC balance. I made a transaction ...
0
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1answer
214 views

Manually create a transaction to spend the output of a P2SH tx

I want to manually create a transaction to spend the output of a P2SH tx, but I don't know where the redeem script should be placed in the new transaction? I followed an online tutorial Building a ...
1
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1answer
54 views

How do block explorer sites show information that is not available on Bitcoin Core?

As I understood in the following post How to get unspents for a specified bitcoin address?, we should use listunspent only on addresses that belong to our own wallet otherwise will return blank. But ...
3
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2answers
224 views

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

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 ...
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2answers
262 views

how to fix Bitcoin core 14.2 on Windows 10 Home 64bit ver.

I cant install Bitcoin Core 13.2 thru 15.01 64 bit on my window 10 64 bit system it worked ver 14.2 worked before I tried to sign into coinbase that emailed me an address that needed to Identify my ...
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0answers
36 views

Cannot compile Bitcoin and dependencies. Raspberry pi 4

I'm trying to compile Bitcoin and its dependencies on a Pi 4. The process: - git clone the repo on an external SSD I mounted (path /mnt/ssd/sources/) git clone https://github.com/bitcoin/bitcoin.git ...
2
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3answers
103 views

CHECKSEQUENCEVERIFY After x time of last transaction

Is there a way where i can have a multi-sig address which will allow one of the signers to use only their single key after a set amount of time after each transaction/update on the address? I want ...
0
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2answers
107 views

Is it possible to generate(mine) a block with specific transaction via bitcoin-cli on regtest?

I want to generate a block with specific transaction via bitcoin-cli on regtest. The "generate" command does not have the option. It collects transactions in mempool by the default rule. I guess I ...
0
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1answer
184 views

How to retrieve transactions in realtime from bitcoind .dat files

I want to get all the data from blocks as they get updated on my local node. Abe offers very poor performance, and fast-dat-parser creates other .dat files and doesn't have enough documentation for me ...