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sf-hacks24

Logo

This is a simple implementation of a blockchain as a database using Python and JavaScript. It includes classes for the blockchain, blocks, and transactions. The implementation also includes proof-of-work mining and transaction validation.

Features

  • Blockchain Class: Manages the chain of blocks, including adding new blocks, mining blocks, and validating the chain.
  • Block Class: Represents individual blocks in the blockchain, containing transactions and a reference to the previous block.
  • Transaction Class: Represents transactions within the blockchain, including sender, recipient, amount, timestamp, data, and hash.
  • Proof of Work (PoW): Blocks are mined using a proof-of-work algorithm, requiring computational effort to validate transactions and create new blocks.
  • Transaction Validation: Transactions are validated to ensure integrity and authenticity.
  • Persistence: The blockchain data is saved to a file for persistence across sessions.

Installation

  1. Clone the repository:
git clone https://github.com/Koshelenkoa/sf-hacks24.git
  1. Navigate to the project directory:
cd blockchain

Usage

  1. Run the main script to start the blockchain server:
python demo.py

  1. The server will start listening for connections on the specified port.

  2. Start local webserver that interfaces with local copy of blockchain

''' cd ../client/client npm start '''

API Endpoints

  • /mine_block: Mine a new block in the blockchain.
  • /add_transaction: Add a new transaction to the pending transactions pool.
  • /get_chain: Get the full chain of blocks.
  • /is_valid: Check if the blockchain is valid.
  • /connect_node: Connect a new node to the network.
  • /replace_chain: Replace the current chain with the longest valid chain in the network.

Authors