Project Title : Blockchain + IoT Secure Smart Home

Objective:

To design a secure smart home system by integrating IoT devices with blockchain technology to prevent unauthorized access, data tampering, and ensure trusted communication.

Project Summary:

This project creates a smart home environment where various IoT devices (like lights, locks, sensors, and cameras) are connected and controlled via a secure, decentralized network using blockchain. All communication between devices and the user is recorded as immutable transactions on a blockchain ledger. This ensures data integrity, enhances security, and eliminates the risk of a single point of failure.

 Key Components:

Hardware: Sensors (motion, door, temperature), actuators (locks, lights), microcontroller (ESP32/Raspberry Pi)

Software: Blockchain platform (like Ethereum, Hyperledger), Smart Contracts, Web/Mobile App

Technologies: IoT, Blockchain, Smart Contracts, MQTT/HTTP

Security Features:

Tamper-proof logs of device activity using blockchain

Role-based access control via smart contracts

Decentralized authentication of devices

Real-time alerts for unusual activity

Applications:

Smart door locks and surveillance

Secure access to home automation

Activity logging for audits

Trusted communication between devices

 Outcome:

This project combines the power of IoT with blockchain to enhance home security, privacy, and trust. It showcases how distributed ledgers and smart contracts can protect data in smart environments — a valuable concept for future cybersecurity and IoT systems.