# Bitcoin Mining Simulation

## Overview

This project is a simple Python simulation of Bitcoin mining. It demonstrates the core concepts of blockchain mining, such as generating transactions, calculating hashes, and solving proof-of-work problems by finding a valid nonce.

## Features

-    Random transaction generation.
-    SHA-256 hashing of block data.
-    Proof-of-work implementation with adjustable difficulty.
-    Simulation of blockchain block creation.

## Requirements

-    Python 3.6+

## Installation

1. Clone the repository or download the source code:
     ```bash
     git clone <repository-url>
     ```

## Usage

1. Run the script:
     ```bash
     python main.py
     ```
2. The program will generate random transactions, mine blocks, and display the resulting hashes.

### Example Output

```
Mining Block 1 with Transactions: 12345->67890->50; 54321->09876->30; 11111->22222->20
Block found! Nonce: 45678, Hash: 00000f9d6c24...
New Hash: 00000f9d6c24...
```

## Configuration

The script contains configurable constants to adjust the mining simulation:

-    `MAX_NONCE`: Limits the number of nonce iterations for mining. Default is `1,000,000`.
-    `DIFFICULTY`: Specifies the number of leading zeros required in the hash. Default is `6`.

To modify these values, edit the script directly:

```python
MAX_NONCE = 1000000  # Set a higher or lower limit as needed
DIFFICULTY = 6       # Adjust difficulty for faster or slower mining
```

## Project Structure

-    `mining_simulation.py`: Main script containing all functionality for the simulation.

## How It Works

1. **Transaction Generation**: Random transactions are created with a sender, receiver, and amount of bitcoins.
2. **Hash Calculation**: Each block is hashed using SHA-256.
3. **Proof-of-Work**: The script iterates through possible nonce values to find a hash matching the difficulty.
4. **Blockchain Simulation**: Each block references the previous block's hash, forming a simple blockchain.

## Limitations

-    This is a simplified simulation and does not represent the full complexity of real-world Bitcoin mining.
-    The script is single-threaded and not optimized for performance.

## License

This project is licensed under the MIT License. See the LICENSE file for details.

## Contributions

Contributions are welcome! Feel free to fork the repository and submit pull requests.

## Contact

For questions or suggestions, please reach out to [your email or GitHub profile].