bitcoin | Simple Java interface to handle Bitcoin transactions | Cryptocurrency library

by wealdtech Java Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | bitcoin Summary

bitcoin is a Java library typically used in Blockchain, Cryptocurrency, Bitcoin applications. bitcoin has no bugs, it has no vulnerabilities, it has build file available and it has high support. You can download it from GitHub.

A simple Java implementation of the core Bitcoin classes to handle generation of Bitcoin transactions.

Support

Quality

Security

License

Reuse

Support

bitcoin has a highly active ecosystem.

It has 11 star(s) with 3 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

bitcoin has no issues reported. There are no pull requests.

It has a negative sentiment in the developer community.

The latest version of bitcoin is current.

Quality

bitcoin has 0 bugs and 0 code smells.

Security

bitcoin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

bitcoin code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

bitcoin does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

bitcoin releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

It has 3359 lines of code, 344 functions and 44 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed bitcoin and discovered the below as its top functions. This is intended to give you an instant insight into bitcoin implemented functionality, and help decide if they suit your requirements.

Sign the inputs of a transaction
Sign data using ECDSA
Create a new input script with the given signature
Compares two hashes
Displays a private key
Encodes a byte array into Base58
Divide a number into a number
Decode a Base58 string into a byte array
Generates the script
Converts a long to a little - endian byte array
Converts a long to a byte array
Generates the bytecode for the given Script
Instantiate an address from a Bitcoin address string representation
Create a heuristic hash of the input bytes
Calculates a value from a string representation
Converts a hex string to a byte array
Return a string representation of this operation
Checks to see if this address is for the given network

Get all kandi verified functions for this library.

bitcoin Key Features

No Key Features are available at this moment for bitcoin.

bitcoin Examples and Code Snippets

No Code Snippets are available at this moment for bitcoin.

Community Discussions

Trending Discussions on bitcoin

Flutter - How to refresh a Widget on button Click?

Adjusting Labels of Altair Grouped Bar Chart

different htaccess for directory issue

Add data into 2 columns in same row with the data coming from Javascipt Websocket

How to resample frequency conditional on two columns in pandas?

How to fix LevelDB library load error when running RSKj node on a Windows machine?

after updating flutter, Firebase.initializeApp() does not seem to work on my phone anymore

How to retreive the date when video has been released on Youtube using Python and Selenium

Calculating Bitcoin mining difficulty

Python - BeautifulSoup - Selecting a 'div' with 'class'-attribute shows every div in the html

QUESTION

Flutter - How to refresh a Widget on button Click?

Asked 2022-Mar-01 at 10:15

I'm making an app where I plot charts of cryptocurrency. I have a file like this, that renders a chart of btc/24h in it. I'm using chart_sparkline package to plot the chart.

I have the following code, and it is not working on a button click, how do I fix this?

...

ANSWER

Answered 2022-Mar-01 at 10:15

I fixed this, I was passing constructor parameters of Portfolio to _PortfolioState, this won't update the values the next time. Instead of passing these values to _PortfolioState, I used widget.coin and widget.days to extract the data from the Portfolio class.

Thanks to this StackOverflow link: Passing Data to a Stateful Widget in Flutter

Source https://stackoverflow.com/questions/71293849

QUESTION

Adjusting Labels of Altair Grouped Bar Chart

Asked 2022-Jan-25 at 00:04

I have this dataframe called table:

...

ANSWER

Answered 2022-Jan-25 at 00:04

You can remove the x title by setting title=None in the x encoding. You can add a line break to the problematic strings by replacing them with a list of lines. For example:

Source https://stackoverflow.com/questions/70841887

QUESTION

different htaccess for directory issue

Asked 2022-Jan-21 at 17:23

root 
  /question
  /pages
  index.html
  .htaccess

...

ANSWER

Answered 2022-Jan-21 at 17:23

You don't need anything in root .htaccess for this and just a RewriteCond by itself isn't doing anything anyway.

You just need to have this rule in /question/.htaccess

Source https://stackoverflow.com/questions/70805152

QUESTION

Add data into 2 columns in same row with the data coming from Javascipt Websocket

Asked 2022-Jan-17 at 05:28

I am new to JavaScript, not sure if this very basic question. I've created a Bitcoin Price update dashboard using the data fetched from the external WebSocket. I managed to get the data from the WebSocket and display it on the HTML table but i was only able to fetch only the live price of the bitcoin I want to also display the Bitcoin quantity in the other column. I want to know how to append two different data in 2 columns in one row. I tried my best to explain.

I have provided the code snippets below as well as external Websocket from where I am pulling the data.

NOTE: I'm pulling the data from an external websocket and with that WebSocket I can get all the details like Bitcoin price, quantity, type and everything. "messageObject.p" means Price and "messageObject.q" means Quantity. p=price and q=quantity. I'm able to get the messageObject.q (quantity) to be displayed on the table but I'm unable to show the messageObject.p (price) in the other column of the table.

Please let me know how should I insert the row dynamically into a HTML table. Thank you so much in advance

...

ANSWER

Answered 2022-Jan-09 at 21:26

You only have one parameter in your insertRow() function. Also, inside of your insertRow() function, you are never trying to read from the passed in quantity variable.

Source https://stackoverflow.com/questions/70645545

QUESTION

How to resample frequency conditional on two columns in pandas?

Asked 2022-Jan-06 at 10:24

I have the following dataframe:

...

ANSWER

Answered 2022-Jan-06 at 10:16

Rounding and pivot table is a solution:

Source https://stackoverflow.com/questions/70605307

QUESTION

How to fix LevelDB library load error when running RSKj node on a Windows machine?

Asked 2022-Jan-06 at 09:47

I am trying to run RSK blockchain node RSKj on a Windows machine. When I run this line in a terminal:

...

ANSWER

Answered 2021-Oct-06 at 02:26

This is actually a warning, not an error, though it may seem like the latter. This means that on your OS and architecture, that particular library does not exist, so it falls back to a different implementation (using a non-native library). In this case, the block verification is slower, but otherwise RSKj should continue to function properly.

Something that might help you to overcome the “slowness” of the initial sync is the --import flag. See the reference in the CLI docs for RSKj.

Also you can send an RPC to ensure that your node is running OK. Run the following curl command in your terminal

Source https://stackoverflow.com/questions/69454759

QUESTION

after updating flutter, Firebase.initializeApp() does not seem to work on my phone anymore

Asked 2022-Jan-04 at 09:01

I updated the flutter to the latest version today and after that the app is not loading on real device because something is going wrong with Firebase.initializeApp().

It does seem to still work on the android emulator but not on real device.

This is the main.dart:

...

ANSWER

Answered 2022-Jan-03 at 14:05

Do you give permission for internet in Manifest file of an android?

Source https://stackoverflow.com/questions/70566815

QUESTION

How to retreive the date when video has been released on Youtube using Python and Selenium

Asked 2022-Jan-03 at 15:57

I made a script in python and selenium that makes a search on youtube. When it's completely loaded, I'm only able to fetch all titles from the results. Is there any line of code I can integrate in order to fetch date publishing too?

This is my code:

...

ANSWER

Answered 2022-Jan-03 at 15:57

To retrieve the date/time when video has been released on Youtube using Python and Selenium you can use the following Locator Strategy:

Code Block:

Source https://stackoverflow.com/questions/70567830

QUESTION

Calculating Bitcoin mining difficulty

Asked 2021-Dec-24 at 09:38

I am working on a project that requires me to get real time mining difficulty of bitcoin. So I read on this page that explains how to get the mining difficulty from an hash of a block : https://en.bitcoin.it/wiki/Difficulty

So I made this python script that collect all hashes from the Blockchain api between two dates.(https://www.blockchain.com/api) and calculate mining difficulty from the hashes.

But when I plot the result, I have something really different from every other mining difficulty that I saw online. The mining difficulty is really messy as you can see here :

x= time , y = difficulty

Here is when I apply a np.log to the difficulty: x= time , y = np.log(difficulty)

As you can see, the result is really messy. So I wondered if there is a crypto expert that is able to tell what is wrong with my code of my formula (or maybe if I am right) :)

Here is my code :

...

ANSWER

Answered 2021-Dec-23 at 21:10

Since the hashes are effectively random, with each bit independent, there is a chance that, in addition to the n required 0s for the proof of work, some following bits are 0 as well. (These hashes would have been valid even if n had been higher at the time, but that’s not relevant.) The “dynamic range” here, relative to the floor of the noise which may be taken as the required difficulty, seems to cover about e¹⁰=22000, which is easily appropriate for the number of blocks mined.

(The actual n isn’t an integer, since the target isn’t a power of 2, but this gives the correct idea.)

Source https://stackoverflow.com/questions/70466070

QUESTION

Python - BeautifulSoup - Selecting a 'div' with 'class'-attribute shows every div in the html

Asked 2021-Dec-01 at 11:34

I'm trying to crawl coinmarketcap.com with BeautifulSoup (I know there is an API, for training purposes, I want to use BeautifulSoup). Every piece of information crawled so far was pretty easy to select, but now I like to get the "Holder Statistics" looking like this:

holder stats

My testing code for selecting the specific div containing the desired information looks like this:

...

ANSWER

Answered 2021-Dec-01 at 11:34

You should use .select() when you want to use as css selector. In this case, holders = soup.select('div', class_='n0m7sa-0 kkBhMM') the class part is essentially ignored...and it finds all the

with any class. To specify that particular class use either the .find_all(), or change your .select()

holders = soup.select('div.n0m7sa-0.kkBhMM')

holders = soup.find_all('div', class_='n0m7sa-0 kkBhMM')

Now in both of these cases, it will return None or an empty list. That is because that class attribute is not in the source html. This site is dynamic, so those classes are generated after the initial request. So you either need to use Selenium to render the page first, then pull the html, or see if there's an api to get the data source directly.

There is an api to get the data:

Source https://stackoverflow.com/questions/70167649

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install bitcoin

You can download it from GitHub.
You can use bitcoin like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the bitcoin component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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