Blockchain Application

Overview

This project implements a simple blockchain with a RESTful API for interaction. The blockchain supports creating blocks, mining, and recording transactions. It is built using Python and Flask.

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Features

• Blockchain Management:
  • Append new blocks to the chain.
  • Retrieve the full blockchain.
• Mining:
  • Implements proof-of-work (PoW) for block validation.
  • Rewards miners with a default token.
• Transactions:
  • Records sender, recipient, and amount for each transaction.
  • Adds pending transactions to a new block upon mining.

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Requirements

• Python 3.8+
• Flask
• Requests

Install dependencies:

  pip install Flask requests

API Endpoints

1. Get Blockchain

   • URL: /blockchain
   • Method: GET
   • Description: Retrieve the entire blockchain.
   • Response:

     {
       "chain": [...],
       "length": <number_of_blocks>
     }

2. Mine a Block

   • URL: /mine
   • Method: GET
   • Description: Perform proof-of-work to mine a new block.
   • Response:

     {
       "message": "New Block Mined",
       "index": <block_index>,
       "hash_of_previous_block": <previous_block_hash>
     }

3. Add Transaction

   • URL: /transactions/new
   • Method: POST
   • Payload:

     {
       "sender": "<sender_address>",
       "recipient": "<recipient_address>",
       "amount": <amount>
     }

   • Description: Record a new transaction to be added to the next block.
   • Response:

     {
       "message": "Transaction will be added to Block <block_index>"
     }

Disclaimer

This is a simple blockchain prototype designed for educational purposes. It is not secure for production use.