Time-Release Blockchain and Application

This project was a fork from Sangoou's project.

This project is based on a simplified PoW blockchain with some modification to fit modern Python 3.9 - SimpleCoin

In this repo, we aim to provide educational materials to test and learn a new design for time-release blockchain technology. Moreover, some flaws in existing design would be fixed in our new design.

This is a very simple Python implementation of main ideas for time-release blockchain and its core functionalities.

Directories

• blockchain - Python modules for Block and Transaction classes using in this blockchain.
• crypto - Discrete Log Problem Based Crypto system (e.g. elgamal) implementation in Python for encryption and decryption of data
• mining - Mining module which provide time-release functionality and blockchain PoW mining work
• test - Test codes

Files in Root Dir

• miner_config.py - default configuration settings for current miner, you may add your customize configurations
• miner.py - the core miner code to run
• .env - the environmental variables to run the blockchain node, including the miner address, miner url & port and peer nodes url. If using other miner url, you may modify this file locally.
• wallet.py - the core wallet code for sending and receiving tokens for this blockchain
  • if you run the wallet.py, it may generate a public key and private key for transaction as stored in the "test_miner.txt" file. Note that this key pair is based on ECDSA which is only for transaction but not time-release data encryption.
• app.py - the Flask app to provide web service between miner nodes and frontend wallet. if running the Flask app with a customized node ip and port, please use below shell script.

    python3 -m flask run --host=127.0.0.1 --port=5000