MinChain - minimal blockchain

For experimenting and future projects.

Requirements

• Python 3.6+
• [optional] scrypt for scrypt based hashing

Install

$ pip install --user repachain

or (using latest available code)

$ pip install --user git+https://github.com/dyuri/repachain

or

$ git clone https://github.com/dyuri/repachain
$ pip install --user repachain

Usage

>>> from repachain import RepaChain
>>> rc = RepaChain('abc', 'sha256')
>>> rc.add_block('whatever')
>>> rc.verify()
>>> rc.to_json_file('whatever.json.gz')
>>> rc[1].hash = 'wrong hash'
>>> rc.verify()
repachain.InvalidBlockException: Wrong hash at block 1
>>> rc2 = RepaChain.from_json_file('whatever.json.gz')
>>> rc2.verify()
>>> rc2[1].data
'whatever'

Testing

You need pyenv for running the testsuite for both python 3.6 and 3.7.

$ pip install --user tox tox-pyenv pytest pytest-cov
$ tox

TODO

• proper documentation