https://github.com/koshikraj/justblockchain

Simple implantation of blockchain with consensus algorithm
https://github.com/koshikraj/justblockchain

bitcoin blockchain naivechain proof-of-work

Last synced: about 1 month ago
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Simple implantation of blockchain with consensus algorithm

• Host: GitHub
• URL: https://github.com/koshikraj/justblockchain
• Owner: koshikraj
• License: mit
• Created: 2018-03-13T18:14:56.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-12-26T20:36:04.000Z (almost 2 years ago)
• Last Synced: 2024-09-27T13:40:15.749Z (about 2 months ago)
• Topics: bitcoin, blockchain, naivechain, proof-of-work
• Language: Python
• Homepage: http://justblockchain.readthedocs.io
• Size: 22.5 KB
• Stars: 17
• Watchers: 3
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.rst
  • Changelog: HISTORY.rst
  • Contributing: CONTRIBUTING.rst
  • License: LICENSE

Awesome Lists containing this project

README

        
==============

justblockchain

==============

.. image:: https://img.shields.io/pypi/v/justblockchain.svg

        :target: https://pypi.python.org/pypi/justblockchain

.. image:: https://img.shields.io/travis/koshikraj/justblockchain.svg

        :target: https://travis-ci.org/koshikraj/justblockchain

.. image:: https://readthedocs.org/projects/justblockchain/badge/?version=latest

        :target: https://justblockchain.readthedocs.io/en/latest/?badge=latest

        :alt: Documentation Status

.. image:: https://pyup.io/repos/github/koshikraj/justblockchain/shield.svg

     :target: https://pyup.io/repos/github/koshikraj/justblockchain/

     :alt: Updates

A blockchain linker to help understand hash functions in blockchain

* Free software: MIT license

* Documentation: https://justblockchain.readthedocs.io.

Quick start

-----------

Installation

~~~~~~~~~~~~

- pip install justblockchain

Creating simple blockchain

~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block::

    >>> from justblockchain import justblockchain

    >>> blockchain = justblockchain.Blockchain()

    >>> blockchain.add_block("some block content")

    #display the blockchain

    >>> blockchain.chain

    [{'previous_hash': '0', 'hash':

    '816534932c2b7154836da6afc367695e6337db8a921823784c14378abed4f7d7',

    'timestamp': 1465154705, 'index': 0, 'data': 'my genesis block!!'},

    {'previous_hash':

    '816534932c2b7154836da6afc367695e6337db8a921823784c14378abed4f7d7', 'hash':

    'a046e0b31d2374d171a6bf62f15261f8bb1f71e6351aab2ce7ce6d550506d9ee',

    'timestamp': '1521013680', 'index': 1, 'data': 'some block content'}]

Creating a Block using proof-of-work

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block::

    >>> from justblockchain import justblockchain

    >>> blockchain = justblockchain.Blockchain()

    >>> blockchain.difficulty_bits = 20

    >>> blockchain.add_block("some block content")

    Computing nonce for the block...

    Success with nonce 2991544

    Hash is 00000fc3d1420243cca17693bcc75334eb9f01b0943772f5d6456e17f3218abc

Credits

-------

- Implementation of Proof of work algorithm in the version 1.0.0 is inspired from `Mastering Bitcoin `_ - First Edition by  `Andreas M. Antonopoulos LLC `_ which is licensed under `Creative Commons Attribution-ShareAlike 4.0 International License `_

- This package was created with Cookiecutter_ and the `audreyr/cookiecutter-pypackage`_ project template.

.. _Cookiecutter: https://github.com/audreyr/cookiecutter

.. _`audreyr/cookiecutter-pypackage`: https://github.com/audreyr/cookiecutter-pypackage