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
-2
votes
0answers
6 views

Wallet source code for altcoin [closed]

I have followed this guide to create an altcoin: https://www.hackster.io/pjdecarlo/how-to-make-a-cryptocurrency-using-litecoin-v0-15-source-fb5e82 It comes with a desktop wallet app but there is no ...
0
votes
1answer
17 views

generating random pair key has standard?

If a crypto wallet generates all pair key between small range for example between 1-100, the risk and possibility of creating the same key is an increase. Generating random pair keys for ...
0
votes
1answer
15 views

Error generate new block with signet test

I have tried to test signet to generate new block but it is showed message as below: bicoin-cli -signet -generate 1 ERROR: ProcessNewBlock: AcceptBlock FAILED (bad-signet-blksig, signet block ...
0
votes
1answer
25 views

Unable to return BlockHashes when I run this generatetoaddress

I have downloaded and fully synced with my Mac last Saturday, my Bitcoin Core version is v0.21.0 and my Bitcoin-Qt version 5.9.8. I did run other RPC commands such as "getrpcinfo" and it did ...
1
vote
0answers
26 views

cannot generate bitcoin first block

I have download bitcoin source and change genesis in regtest. and i try to generate 1 block by command ./bitcoin-cli -generate 1 it does not show any mining block. i try over 10 times but it is still ...
-1
votes
0answers
19 views

What is the best time to buy btc? [closed]

whats the best time to buy btc?
0
votes
0answers
33 views

How mining works for a new born cryptocurrency [duplicate]

What I have learnt that mining is breaking a block which contains transactions using hashing algorithm (Sorry if this is wrong please do correct me). Now my question is how mining will work for a new ...
0
votes
0answers
30 views

I want to know by an example how price of bitcoin changes [closed]

Let us assume a hypothetical scenario for the sake of simplicity : Current price of bitcoin is $100 Total bitcoin in supply are 1,000,000 Total no. of bitcoin as 2,000,000 No limit orders on trading ...
-1
votes
0answers
22 views

How does bitcoin work from a Mathematics standpoint? [closed]

I would like to know how bitcoin works from a mathematics standpoint
0
votes
1answer
34 views

understand bitcoin transaction json extracted from blockchain

i'm trying to understand bitcoin transaction extract from bitcoin core with RPC, with an example this block hash : 00000000d14f2e97678951ad004d6699babd27e07ca722c46b30dc24c67eed7a {"method": ...
2
votes
1answer
27 views

What does the sixth line in the output of the Bitcoin Core GUI RPC command “gettxoutsetinfo” mean?

An example of the output of this RPC command is as follows. 1 "height":n, (numeric) The current block height (index) 2 "bestblock": "hex", (string) The hash of ...
0
votes
0answers
23 views

What is the fraction of the Bitcoin mining power that might be engaged in Selfish-Mining?

Is there an estimate for the fraction of miners engaged in Selfish Mining within the BTC network? In light of the publication The Impact of Selfish Mining on Bitcoin Network Performance (2021), ...
0
votes
0answers
6 views

bitcoind.service problem showing a error message

it is giving this message The unit bitcoind.service has entered the 'failed' state with result 'exit-code'.
1
vote
1answer
38 views

Unconfirmed transaction: the status is “0 / unacknowledged, not in memory pool ”

I started a transaction with bitcoin-0.21.0-win64, a Windows client. It may be that the fee is set too low, which leads to the unsuccessful transaction. What should I do in the future? What do I need ...
4
votes
2answers
698 views

Will “Taproot” replace Lightning Network?

Can somebody explain to me if Taproot will fix the issues that Lightning Network solves, without the Lightning Network? That is, near-zero fees, privacy and fast settlements? Will Taproot allow me to ...
0
votes
0answers
32 views

How Create Bitcoin wallet from a private key works?

I'm trying to understand how i can create a pair of bitcoin private key and public key with : https://github.com/Destiner/blocksmith for example : import blocksmith kg = blocksmith.KeyGenerator() ...
0
votes
0answers
10 views

Why implement *Wallet* at library level?

Using bitcoin-qt, and we need to create Wallet to handle our account (Private + Public Keys). But I really don't know why we are forcing this to everyone at library level. I can't find a simple way to ...
0
votes
0answers
10 views

importprivkey with multiple wallets

Using bitcoin-qt console How can I specify which wallet I wish to import an address to if I have multiple wallets importprivkey doesn't have option to specify a wallet.
0
votes
1answer
32 views

Bitcoin Core Wallet doesn't accept my passphrase

I am using Bitcoin Core Wallet .21 and have encrypted my wallet. When I try to send some coins it asks for the passphrase, which it says is incorrect. I have only ever used one of two passphrases and ...
0
votes
2answers
40 views

Found Bitcoin Core Wallet with unconfirmed Transactions, anything to salvage?

I am currently looking through old .dat files and found a wallet with two "Received with" transactions that are unconfirmed. When I enter the address from the Label on blockchain.info the ...
0
votes
1answer
40 views

I can not find a clear mathematical proof method with details and example for “near to zero chance of generating the same pair key wallet”

A mathematical proof method with details for "near to zero chance of generating the same pair key wallet" I can not find a clear mathematical proof for the top sentence with example
0
votes
0answers
10 views

Does the protocol ensure that pair keys wallet are unique? [duplicate]

What mechanism for proof unique pair keys (public key and private key) when creating a wallet with several sources(such as "wallet.btc.com", "wallet.bitcoin.com", "www....
2
votes
1answer
28 views

Bitcoin Core: Unit Test Failure: system_tests.cpp: Line 48 BOOST_AUTO_TEST(run_command)

I cloned the Bitcoin Core and did the build. But, I am experiencing a Unit Test Failure in system_tests.cpp, Line 48 BOOST_AUTO_TEST(run_command). First, my environment: Hardware: Intel i7-8550U @1....
0
votes
0answers
36 views

Why universities and charity don't accept Dogecoin or Bitcoin donation?

I just tried to contact the top universities in the USA and other countries. i also contacted the charity organizations such as Red cross and united way, etc. but no response at all. seems they don't ...
0
votes
0answers
20 views

Where can I find a high performance search capabilities in a Bitcoin node implementation?

Where can I find a Bitcoin node implementation, which is capable of thousands of searches per minute, without degrading performance of the node? I am aware of two Bitcoin node implementations. ...
1
vote
0answers
21 views

bitcoin-etl: problems with installing

I am trying to install bitcoin-etl: https://github.com/blockchain-etl/bitcoin-etl to analyze bitcoin blockchain. I have Mac OS and python3, I run this in terminal: pip install bitcoin-etl Also tried ...
0
votes
1answer
18 views

How can I load a specific private key into my wallet

Starting a Private Node using bitcoin-qt. And then I generate a pair of keys for my own testing. But unfortunately whenever I reset the node, it will generate a new pairs of keys, it makes my ...
0
votes
0answers
15 views

Btc sent is yet to be received for over three weeks it was sent from a coinme wallet to a binace wallet [duplicate]

It’s been really hard understanding what happened Here’s the transaction HASH https://www.blockchain.com/btc/tx/b4a8e885988b8694dcccdaab83456d23544604b19be1f2bef376884f3e5bcd34
1
vote
1answer
47 views

Ubuntu Linux, Unable to set bitcoin datadir to a folder in different drive

I am trying to run a bitcoin node. I want to set the datadir to a folder located on drive other than on which I have installed ubuntu. Folder I want to set as datadir: /media/spider/Utils/bitcoin ...
3
votes
1answer
140 views

Bitcoin-qt getnewaddress returns address starting with 2

I am expecting it starts with '3' the the results below: getnewaddress "" "p2sh-segwit" 2NFcKJTPZs1syYhwaBkXty6Vt6FEKxD3HTC Is this because I am running on a private block chain?
0
votes
0answers
20 views

How to get private Keys from Wallet using bitcoin-qt

createwallet "MyWallet" getwalletinfo { "walletname": "MyWallet", "walletversion": 169900, "format": "bdb", "balance": 0....
0
votes
0answers
30 views

Error compile bitcoin mac OS

I have straggle to compile bitcoin core on mac OS machine. it has an error as the following: /usr/local/include/QtCore/qglobal.h:667:65: error: expected '>' typename = std::enable_if_t<...
0
votes
0answers
11 views

Connecting Ledger Nano X wallet to my Bitcoin node

I've been trying to connect my Ledger nano x to my bitcoin full node following this instructions by Ledger. I have configured the bitcoin.conf file as follows: prune=0 txindex=1 server=1 daemon=1 ...
-2
votes
0answers
58 views

What are the main obstacles to supporting Lightning Network in Bitcoin Core?

I have found c-lightning doesn't support Windows, so there are few projects that support Lightning and are written in C/C++ and run on Microsoft Windows. It strikes me that it would be useful if ...
1
vote
1answer
49 views

Is it actually possible to secure your coins while also allowing access to “near and dear” when you die?

I have my wallet.dat files encrypted, stored on a computer which in turn is encrypted. All storage devices where the files are backed up to are also encrypted. I strongly doubt that any human could ...
0
votes
1answer
15 views

Add bitcoin payments to java app using BitcoinJ

I need to add Bitcoin payment to my application using the BitcoinJ library, but I'm new to using Bitcoin. I have one thought To create a new address for each new user, but I don't know if this is the ...
1
vote
1answer
45 views

Is it safe to rent server to run a full node?

I want to rent dedicated server to run a full node to receive bitcoin for my website. Is this safe if I encrypt my wallets or should I own physical server?
1
vote
1answer
84 views

bitcoin payment has big fees

I am using the bitcoin-rpc and everytime i create an invoice from a PHP script, i create a new address. All is ok, i get the money after, i have a script that checks number of confirmations, then when ...
0
votes
0answers
11 views

How to make transaction with NBitcoin?

I was working on sending bitcoin from one address to another. I followed this article: https://programmingblockchain.gitbook.io/programmingblockchain/bitcoin_transfer/spend_your_coin#sign-your-...
0
votes
0answers
14 views

How to make Bitcoin Core mark receive addresses which have been used?

Looking in the list of receive addresses I've created, I can't see any indication of whether or not any of them have been "used", that is, received any coins ever. This is important ...
0
votes
1answer
13 views

Question about Changing Passphrase

In Bitcoin Core, the previous password is required in order to change to a newer password. Is this previous password used simply as a proof-of-ownership key (that doesn’t do anything but show proper ...
1
vote
0answers
39 views

In concrete terms, how do I start using Lighting Network right now?

I have Bitcoin Core installed on Windows and it's fully synced. I am able to send and receive Bitcoin payments. I hate the fees and waiting, so I want to use Lightning Network. I've spent countless ...
0
votes
1answer
31 views

Is there a limit on the number of characters in a wallet.dat file?

I want to try to recover my wallet.dat file which has a small amount of Bitcoin, and I was wondering whether there was a character limit for passphrase encryption, or whether the app allows you to use ...
0
votes
1answer
13 views

Possible To --enable-wallet After Syncronization With Blockahin?

I am running bitcoind from the command line (--without-gui) and my system apparently does not have the correct Berkley DB version (4.8+). Therefore, I chose to run the program without the wallet ...
0
votes
1answer
40 views

Is it possible to send Bitcoin without the passphrase to the wallet?

I’ve been getting back into cryptocurrency lately, and I’ve found one of my old wallet.dat files with a very small amount of BTC. Unfortunately, I created a random password of characters and put it ...
0
votes
1answer
27 views

What do these memory configurations in debug.log of BitCoin Core represent?

In the debug.log file of BitCoin Core, the cache configuration is described as follows. Cache configuration: Using 2.0 MiB for block index database Using 8.0 MiB for chain state database Using ...
1
vote
1answer
34 views

How to get info for public address from bitcoin-cli + local db? (Can it be done without creating a wallet?)

I just started running my own full node. IBD is finished, and I'm now learning how to use bitcoin-cli. First I would like to extract all the available information for one or more public addresses ...
2
votes
1answer
68 views

Setting up lightning with bitcoin-core

I have some questions about bitcoin-core and lightning-network-daemon. I have succesfully set up a bitcoin node running on Ubuntu Server 20.04 by following this tutorial: https://bitcoin.org/en/full-...
0
votes
0answers
11 views

What is the relationship between LevelDB's cache (default 8MB) and Bitcoin's UTXO cache?

Please correct me if I am wrong. Bitcoin uses levelDB to store UTXO set. LevelDB has a default 8MB block cache, and the Bitcoin also has a dbcache(default 450MB). What is the relationship between the ...
0
votes
0answers
20 views

How to Transfer Real BTC From My Wallet to another account using C#

Hi I wanted to send BTC from my wallet to another wallet through any C# Library. Currently i am using NBitcoin Library to perform this action. But, i am not able to get through it. Thanks

1
2 3 4 5
69