bitcoinj | A library for working with Bitcoin | Cryptocurrency library
kandi X-RAY | bitcoinj Summary
kandi X-RAY | bitcoinj Summary
The bitcoinj library is a Java implementation of the Bitcoin protocol, which allows it to maintain a wallet and send/receive transactions without needing a local copy of Bitcoin Core. It comes with full documentation and some example apps showing how to use it.
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Top functions reviewed by kandi - BETA
- Run the action
- Send a list of outputs to the wallet
- Attempts to rotate the keychain if necessary
- Add the private key
- Connects to a block
- Returns flags indicating which script validation tests should be applied to the given transaction
- Returns the count of P2SH Sig Ops in a script
- Connects the block to the database
- Returns flags indicating which script validation tests should be applied to the given transaction
- Returns the count of P2SH Sig Ops in a script
- Synchronously send an account to the wallet
- Main entry point
- Calculates the length of the script
- Receive a message from the wire buffer
- Signs all the inputs with the given transaction
- Reads the actual binary data from an input stream
- Processes message received from the remote peer
- Test program
- Initialize the vstore
- Runs the transaction
- Parses the packet
- Handles a new peer
- Reorganize the block
- Reads a binary hash from the input stream
- Checks to see if this block is a difficulty transition point
- Simple test
- Signs all connected inputs
- Initializes the window setup
bitcoinj Key Features
bitcoinj Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copypublic DateTime Timestamp { get; }
public class LongToDateConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (!(value is long SET @after := '2022-04-04',
@before := '2022-04-06';
SELECT *
FROM `presences` AS p
JOIN (SELECT * FROM `days` WHERE `day` BETWEEN @after AND @before)
AS d ON d.`day` BETWEEN Date(p.`start`) AND Date(p.`end`) -- The core #version 400 core
in vec2 position;
out vec2 pos;
void main(void)
{
pos=position;
gl_Position = vec4(position.xy,0.0,1.0);
}
#version 400 core
in vec2 pos;
out vec3 out_Color;
// light
const flon = 4 # number of cores
m = 1 # number of threads per core
TOTAL_MEMORY = 16282416 kB
TOTAL_MEMORY * min(1, 1 / 4)
> 4070604
lscpu --all --extended
➜ lscpu --all --extended
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ
0 0 0 0 0:0:0:0 yes 6700.0000 800.0000
1 0 0 0 0:0:0:0 yes 67@Echo Off
SetLocal EnableExtensions DisableDelayedExpansion
Set /A "SKU=OSV=0"
For /F "EOL=O Tokens=1,2 Delims=. " %%G In ('%SystemRoot%\System32\wbem\WMIC.exe
OS Where "Version>10" Get OperatingSystemSKU^, Version 2^>NUL'
) Do Set QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++14
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATdotnet new -i "Microsoft.Quantum.ProjectTemplates::0.2-*"
dotnet new -i "Microsoft.Quantum.ProjectTemplates"
dotnet new --update-apply
# Install the .NET Framework # Netcore 6
export PATH=$PATH:$HOME/.dotnet/tools
export DOTNET_ROOT=$HOME/.dotnet
export PATH=$PATH:$DOTNET_ROOT
❯ dotnet ef
_/\__
---==/ \\
___ ___ - task: UseDotNet@2
displayName: 'Install .NET Core sdk 6.x'
inputs:
version: 6.x
Community Discussions
Trending Discussions on bitcoinj
QUESTION
I want to programmatically detect whenever someone sends Bitcoin to some address. This happens on a local testnet which I start using this docker-compose.yml file.
Once the local testnet runs, I create a new address using
...ANSWER
Answered 2021-Nov-18 at 19:39I haven't tested your full setup with electrumx and the ethereum stuff present in your docker-compose file, but regarding your problem, the following steps worked properly, and I think it will do as well in your complete setup.
I ran with docker a bitcoin node based in the ulamlabs/bitcoind-custom-regtest:latest image you provided:
QUESTION
I used -13 as private key in bitcoin but the private key is not valid. How can I get the positive private key from -13 or any other negative numbers using Bitcoinj or java and generate the same address?
...ANSWER
Answered 2021-Sep-15 at 09:51b.mod(new BigInteger("115792089237316195423570985008687907852837564279074904382605163141518161494337"))
QUESTION
I have a small script basically taken from this test script in bitcoinjs-lib
...ANSWER
Answered 2021-May-26 at 18:10looking over https://github.com/iancoleman/bip39 I found I had to specify the correct ravencoin network specifications (don't really understand what this object means) but once I did, it worked perfectly.
QUESTION
My Android app is not syncing to the blockchain, but when I used the bitcoinj libarary on my PC it worked fine.
Note: Both programs start with walletAppKit.setBlockingStartup(false).startAsync().awaitRunning() when the kit is complete and the app calls this on the onCreate method and has sufficient permissions such as read/write and internet. The test device is also physical and not an emulator.
I logged both programs using
ANSWER
Answered 2021-Mar-31 at 14:01Use the kotlin bitcoin kit provided by horizontal systems on github. Use implementation 'com.github.horizontalsystems:bitcoin-kit-android:694d681f3e' in your gradle module and in your project module add mavenCentral()in the buildscript branch:
buildscript {
repositories {
other stuff
mavenCentral()
}
dependencies {
}
}
Then in the allprojects brackets place maven { url 'https://www.jitpack.io' } in the repositories brackets:
allprojects{
repositories{
*other stuff*
maven { url 'https://www.jitpack.io' }
}
}
QUESTION
I'm working on an application involving cryptocurrency, and I'm having trouble with handling the conversion of some of the data involved.
I'm using bitcoinjs-lib to generate Bitcoin addresses. The addresses are created successfully, and my response object looks like the following:
...ANSWER
Answered 2021-Mar-16 at 01:38This is not UTF-8 encoded text, but just binary data. So you can forget about the linked Q/A, you are not in the same situation.
Here it's all your choice as to how you'll encode it, some will prefer to convert it to an hex-dump
QUESTION
ANSWER
Answered 2020-Dec-26 at 01:13Variable UtxoId is part of the request-promise block.
Try:
QUESTION
I am using this BIP32 implementation to derive keys. How can I export the derived public keys in Base64?
...ANSWER
Answered 2020-Nov-24 at 18:54junderw on Github answered this:
publicKey is a Buffer.
publicKey.toString('hex') will turn it into a hex string.
Similarly, for Base64, 'base64' can be used.
QUESTION
I am using bitcoinjs-lib for bitcoin key pair generation.
I got enough examples to generate legacy address and segwit address from the public key, but for bech32 address I could not found anything.
P2PKH which begin with the number 1,
eg: 1BvBMSEYstWetqTFn5Au4m4GFg7xJaNVN2.
P2SH type starting with the number
3, eg: 3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy.
Bech32 type starting with bc1,
eg: bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq.
Thank you for the help.
...ANSWER
Answered 2020-Sep-02 at 17:08It's filed as BIP 0173. You can find documentation about it in the Bitcoin Wiki. Wiki BIP0173
QUESTION
I have used requests in python to get a temporary email box. I need to parse the mail id from the below HTML code(it's beside the "result:"). I have tried using the parse module of python but it is not giving the valid result, instead, I get None as a result. Is there a way to parse from HTML using the left and the right matching strings?
Here is my code>
...ANSWER
Answered 2020-Apr-17 at 05:08I don't know the parse module but I don't see how it can beat regular expressions. You could use an HTML parser to find the script tag, but really just a regex search against the entire html text seems reasonable in this case.
Your data is embedded in a larger list but I recommend keeping the regex search narrow. You have to balance a false positive "mail_id":"507627420" match against the much more likely differences in the list from message to message. So,
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