justblockchain

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

>>> 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

>>> 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.