Dynamic-difficulty Proof-of-Work Blockchain System

This project is an implementation of the Proof of Work (PoW) blockchain system developed in Python 3.9 along with gRPC-python and MongoDB. It can help beginners to have an in-depth understanding on how the blockchain system works. You will be able to play around with some basic blockchain features including "Blockchain Prototype Construction", " Mining Process", "Transaction", "Consensus Network", and "Data Storage".

Basic Features

• Blockchain Prototype
• Dynamic-difficulty Proof-of-Work Algorithm
• Transaction
• Network (gRPC-python)
• Storage (MongoDB)

Features Explanations

Blockchain Prototype

Construct the blockchain system according to the following structure. The block has the following basic content:

1. Index: the height of the current block
2. Timestamp
3. Previous Block Hash
4. Current Block Hash
5. Difficulty: The number of bits at the beginning of block hash
6. Nonce: The random number used to calculate the block hash
7. Merkle Root of transactions
8. Data: Transactions

Dynamic-difficulty Proof-of-Work Algorithm

Transaction

Network

Storage