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.

Filter by
Sorted by
Tagged with
0
votes
1answer
102 views

How to import address with private key using importmulti

Problem. importmulti function has a lot of parameters and they are more difficult to understanding then the parameters of another Bitcoin RPC-API functions. Those who are not profi in modern ...
1
vote
1answer
30 views

What is the meaning of 'change' and 'reserve' in a Bitcoin Core wallet dump?

I'm using libwally to derive addresses from an extended private key. I shared the seed with Bitcoin Core (loaded it in a blank wallet with sethdseed), and noticed that there are 2 addresses in the ...
0
votes
0answers
13 views

Bitcoin Confirmation [duplicate]

it's been 2 days my transaction has not been confirmed yet https://www.blockchain.com/btc/tx/b58aa5a6884d444d783c0f6956d6495ac9dabe28d44d1833ac48ac942cfbc3b4 why it has so many inputs and outputs ...
3
votes
1answer
38 views

Any idea why Bitcoin Core signature is untrusted?

It's suppose to be a trusted signature, right?. I'm downloading Bitcoin Core from bitcoin.org gpg --import laanwj-releases.asc gpg: key 90C8019E36C2E964: 51 firmas no comprobadas por falta de claves ...
0
votes
0answers
26 views

Trouble sending createrawtransaction to bitcoin-qt via json-rpc

I'm trying to post to a local bitcoin full node via json-rpc but I'm getting error 500 from the server. Following the documentation here I tried this code but it's giving the error 500, it works fine ...
1
vote
1answer
41 views

How do I get Raw Transaction Txid, Scriptpubkey Using Bitcoin Core Console

I just finished downloading bitcoin core on windows 7 and I am trying to create a raw transaction. When I typed listunspent 0 or listunspent 1 on console, I got no message (empty message) in the ...
0
votes
2answers
15 views

Upgrade apt bitcoin-core package

I originally set up my bitcoin-core node on Ubuntu 16.04 Xenial using apt. The ppa:/bitcoin/bitcoin package repository that I used isn't maintained beyond version 0.15.0, so I need a different way to ...
0
votes
1answer
17 views

Address Reuse for Multisig Address

It is De facto standard that address should not be reused, and even Bitcoin officially emphasis address should not be reused. Does the same condition apply for Multi-signature address ?, If Yes apart ...
0
votes
1answer
166 views

What is the difference between P2SH redeem script on Bitcoin and on Litecoin?

I am building a service that is based on multisig wallets. My current progress is so that I've implemented the multisigs for Bitcoin network and it works fine. Now I am on Litecoin and I am facing ...
0
votes
1answer
21 views

Installation instrucion the for bitcoin core (tar.gz file from bitcoin.org in Linux/Ubuntu Desktop 18.04.)

There are many discussions going on as there is a lack of a simple tutorial as to how to install Bitcoin Core (GUI) on Linux distributions, i.e Ubuntu 18.04. Bitcoin.org offers the tar.gz file (i.e. ...
0
votes
1answer
52 views

Why does my wallet.dat file contain scripts starting with 0014?

I am trying recover coins from old (2012) wallet.dat. I don't know the addresses. So I dumped several wallet.dat files from Bitcoin Core. I have checked over 25,000 addresses which contain 0 BTC. ...
0
votes
0answers
40 views

corruped wallet.dat / Nversion / bitcoin 0.20.0/ pywallet or other… LILTLE Reward?

Good morning all I introduce myself dydy94 ... I am not an expert in coding but I learned well, the few days preceding this post ... I also got lost a lot: / LOL ... Here, good, I offer 25 $ / 25eu or ...
1
vote
1answer
30 views

What valid transactions are not broadcastable?

Many valid transactions are not broadcastable by default in bitcoin core to avoid attacks that could harm the network. These would rarely be found in a node's mempool but could, however, be found in ...
0
votes
1answer
27 views

GetBlockChecked always returning genesis block?

currently I'm exploring Bitcoin source code and I tried to add custom function getblockvalue inside of blockchain.cpp. Purpose of function is to return sum of all transaction outputs inside of a ...
0
votes
1answer
282 views

Transaction created, but txid not found on blockchain explorers

Transaction created as same others, but status - 0/unconfirmed And txid nod found in block explorers Transaction ID: e9c858f852a1de7c70e6f8377f2147f3def1d4b1d85a5947d028bb9c13450318 How to succefuly ...
0
votes
2answers
171 views

What is the source of initial transactions of bitcoin?

Sorry, if I am wrong or silly! It is understood that: a) Satoshi Nakamoto sent the first transaction to developer Hal Finney on January 12, 2009, the genesis block contains 1,073 transactions and he ...
-1
votes
1answer
42 views

How does bitcoin core establish a peer to peer network

I've tried to look for an answer to this online and haven't found any. My question is: how does bitcoin establish a peer to peer network. Establishing a centralized network with a server in the middle ...
0
votes
0answers
31 views

How may i get all transaction from A address to B address & opposite? [duplicate]

So i just finish download the blockchain from Bitcoin Core, how may i load them files, filter all the transaction from an address to another & print it to text file with detail?
0
votes
1answer
119 views

Try to migrate Bitcoin Core wallet to an HD wallet but get “St13runtime” exception

I am trying to follow these steps to migrate my wallet to an HD wallet. But it failed, the debug log has errors like this: EXCEPTION: St13runtime_error DeriveNewSeed: AddKeyPubKey failed bitcoin in ...
1
vote
1answer
22 views

Working with Bitcoin node on Windows as a developer?

I'm a web developer looking to integrate a Bitcoin node into a PHP application and I am unsure how I would go about interacting with the Bitcoin core in a developer environment for my machine. My goal ...
1
vote
1answer
63 views

How accurate is 'estimatesmartfee' in bitcoin-core?

Method of estimatesmartfee is very simple and easy to use and understand. But I want to know how accurate this function really is? It would be great help if you can provide a link to article or ...
0
votes
0answers
12 views

Is there a way to fetch all transactions in a block via electrum protocol?

Quickly surfing through the list of electrum methods, looks like not, and I will have to use getblock from bitcoind json-rpc. Is there a better way?
0
votes
1answer
29 views

Wallet balance reset

Maybe my question will be stupid, but still I hope for help. Launched a wallet. Synchronized with the network, and my balance dropped to 0. According to the history, it was written that the last ...
1
vote
1answer
14 views

Why does bitcoin uses INIT_PROTO_VERSION (209) for addrme and addryou in the Version Message

Why does Bitcoin use INIT_PROTO_VERSION (209) in the addrme and addryou message of the Version Message? Why is it not using the nodes protocolVersion which had been advertised in the same Message. ...
2
votes
1answer
40 views

Why is my bitcoin core not downloading any blocks?

I am using Centos 7 and I installed the newest version of bitcoin core. I just want to run a full node to download all the blocks. According to their documentation, the first time we start bitcoin ...
1
vote
0answers
14 views

How to reference different wallets with curl JSONRPC requests Bitcoin core

I have a headless Bitcoin core 0.17.1 running on Debian 10, and have created a second wallet "johns-wallet". I'd like to get the walletinfo (or any wallet request) of that specific wallet ...
0
votes
1answer
21 views

Bitcoin icon for .desktop file

When I run bitcoin-qt from CLI I get a nice Bitcoin icon with distinct colors for main and testnet. I want to create a .desktop file to run it from Gnome, how can I configure the icon to be the same? ...
0
votes
0answers
16 views

How data should be build in submitblock

I am trying to understand how bitcoin works internally in solo minning, and i am a little confused with the submitblock method: version: The current version prev block: The previous block merkle ...
3
votes
2answers
3k views

Since which version is the mining functionality removed from the wallet?

As I'm starting to learn to create a new altcoin, I found there is a remarkable difference between old and new Bitcoin/Litecoin Core wallet: old versions (0.6.9 of Litecoin) have mining functionality ...
0
votes
2answers
551 views

How to Send BTC from my address to another using private key

I am working on project of ICO where i am generating dynamic address for Bitcoin receive purpose, I have private key for my account how i can send it to other address which API will be helpful to me. ...
1
vote
0answers
29 views

Explorer for blockchain

I want to develop an explorer for coins(BTC,LTC,BCH,...), like blockchair, or blockchain. I've searched a lot and I have found different answers. Finally, here is my solution. First, I use RPC to ...
0
votes
2answers
493 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.
2
votes
1answer
49 views

How to upgrade Bitcoin Core from 0.18 to 0.20 on Ubuntu 18.04?

I've installed Bitcoin Core on Ubuntu 18.04 (CLI). Now, the version 0.20 of Bitcoin Core is released and I want to upgrade my server to it, but it seems the new version is not included in PPA yet. May ...
8
votes
3answers
2k 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
188 views

BlockUntilSyncedToCurrentChain: txindex is catching up on block notifications

The message "BlockUntilSyncedToCurrentChain: txindex is catching up on block notifications" is appearing regularly in my debug.log. When these messages appear, I can be sure that lnd will not be able ...
0
votes
2answers
49 views

How to send BTC amount from one specific address in Bitcoin Core

I canceled one transaction that was in the memory pool, now I would like to make sure that this transaction will not be sent anymore sending all BTC amount of the original address of this transaction ...
0
votes
2answers
39 views

Blockchain transaction change output

I'm very new to this. It’s hard to know for sure, but what’s most likely the case with the below transaction: Someone sent 25.99 bitcoin to another person/organization Someone sent 1 bitcoin to ...
1
vote
1answer
150 views

Segfault when clearing mempool. What am I doing wrong?

Background: For a research project, I am trying to periodically clear the content of my Bitcoin node's mempool. For this purpose I have created a new thread in init.cpp using the boost threadgroup (I ...
0
votes
1answer
48 views

How ./configure Bitcoin Core build to pick up depends build and installation path at the same time?

I'm trying to build Bitcoin Core and, if I understand it correctly, the configure script uses the --prefix= option twice, once for the inclusion of the depends build (from depends/README.md): **...
0
votes
1answer
27 views

How to use Multisig feature on Bitcoin Core RPC in an online exchange?

I've craeted a small online exchange based on Bitcoin Core. The features in this application are: User send request to get a new address, and the Bitcoin Core generate a new one with defined ...
0
votes
0answers
24 views

Get scripthash for known scriptPubKey in python

I have to query addresses in ElectrumX server. How do I generate scripthash for a known scriptPubKey in python? If my bitcoin wallet address is 1P5ZEDWTKTFGxQjZphgWPQUpe554WKDfHQ ,I want to convert to ...
2
votes
2answers
42 views

Bitcoin Core internal Electrum Server

Is there a technical reason for which there isn't an option in Bitcoin Core that would deploy an internal Electrum Server, or something similar so that a software wallet can fetch addresses and ...
0
votes
1answer
25 views

Blockchain transaction unspent [duplicate]

This is a bitcoin transaction as shown in a blockchain explorer. What does ‘2 confirmations’ mean here? Sorry for the picture quality. Which one is the best answer? 2 confirmations by miners are ...
0
votes
2answers
77 views

Is it possible to change private key

I would like to know if it's possible to change private key of bitcoin wallet via rpc call to bitcoind. Thank you for your answers
0
votes
1answer
105 views

Stay on memory pool when I sending multiple transaction from bitcoin wallet

I run the bitcoin client 0.17.1 on my ubuntu 18.04 desktop. I have some balance in my wallet. Also my client is fully synced.I have face the wallet conflict. When I send multiple transaction at once(...
0
votes
1answer
323 views

What is consensus.BIP34Height? [duplicate]

In the bitcoin source code, I am looking at chainparams.cpp. I can see on line 81 something called consensus.BIP34Height? What is that? I can't figure out what this is. I'm not sure what else to ask ...
2
votes
1answer
4k views

I lost my Bitcoin wallet passhrase. Are my Bitcoins lost?

After reading about all the hacks I created a passphrase that I cant remember. Are Coins lost forever in the blockchain? There must be a lot of coins in this state… Is there any way to see what coins ...
2
votes
2answers
229 views

CLTV vs nLockTime

What is the difference between nLockTime and CLTV? Bitcoin Wiki says: When the CLTV opcode is called, it will cause the script to fail unless the nLockTime on the transaction is equal to or greater ...
0
votes
1answer
55 views

Retrieve number of OP-RETURN transaction

Is there a possible way to extract the bitcoin transaction protocoll with Python and extract specifically OP RETURN transaction? I want to plot the number of those over the course of time to derive ...
0
votes
0answers
19 views

How to manually compute a descriptors checksum?

In the docs it says: The checksum for a descriptor without one can be computed using the getdescriptorinfo RPC. I would like to build a recovery tool where many descriptors are imported, calling ...

1
2 3 4 5
60