Simple Blockchain

This project implements a basic blockchain in C++ with a Proof of Work system.

Features

• Blocks containing index, data, previous hash, timestamp, and nonce.
• SHA256 hash calculation based on block contents.
• Mining blocks with adjustable difficulty (number of leading zeros).
• Chain validation to ensure integrity.

Usage

1. Compile the project:

c++ main.cpp -o blockchain -lssl -lcrypto -Wno-deprecated-declarations