Smart Lock System on Polkadot

Project Overview

The Smart Lock System leverages the Polkadot blockchain to revolutionize property access control. This innovative solution enhances security, convenience, and flexibility for property owners, renters, and guests. With features like blockchain-enabled security, decentralized access control, and interoperability within the Polkadot ecosystem, our system sets a new standard for modern property management.

Key Components

• LockManager Contract: Manages the creation and association of individual Lock contracts for each user, ensuring personalized access control.
• Lock Contract: Provides functionalities for property access management, including adding and managing properties, granting temporary access, and transferring property ownership.
• Property Contract: Represents individual properties, allowing operations like renting out the property and opening the property door for access.
• Property CLI:Listens the smart contract which represents the property, and, when the requierd event is emitted, opens the door.
• App:An user manages the lock contracts to add property or rent it moreover, the user can reach the property contract by lock contract and opens the door.

Listening to Contract Events with Go

For real-time interaction and monitoring of our smart contract events, such as detecting when a door is opened, we provide a Go script that listens to emitted events. This is particularly useful for automating responses to contract activities.

Architecture

• Each property objects represent smart contract. Emit event arrows represent the cli of the property and, openning door is done by cli.

Getting Started

Prerequisites

• Node.js and npm (Node Package Manager)
• A Metamask wallet with testnet tokens of Moonbeam
• Hardhat for compiling, deploying, and verifying smart contracts

Installation

1. Clone the repository:

git clone
cd blocklock

2. Install dependencies for app:

cd block-lock-web-app
npm install

3. Create a .env file in the root directory and add your Polkadot{.js} wallet's private key:

PRIVATE_KEY="your_private_key_here"

Setup For ClI

Ensure you have Go installed on your system and the go-ethereum package is accessible. You can install go-ethereum using go get:

cd Hardware

go get github.com/ethereum/go-ethereum

Running the CLI

go run event_listener.go

Compiling Contracts

Compile the smart contracts using Hardhat:

npx hardhat compile

Deploying Contracts

Deploy the contracts to the Moonbase Alpha testnet:

npx hardhat run scripts/deploy.js --network moonbase

Verifying Contracts

Verify the deployed contracts on the Moonbeam block explorer:

npx hardhat verify --network moonbase DEPLOYED_CONTRACT_ADDRESS "Constructor Argument 1" "Constructor Argument 2"

Interacting with the Contracts

Script Interaction

• Use Hardhat scripts to interact with your contracts by invoking contract methods through ethers.js in your scripts.

Project Structure

• contracts/: Solidity contracts for the Smart Lock System.
• scripts/: Deployment and interaction scripts for Hardhat.

Contributing

Contributions are welcome! Please fork the repository and submit a pull request with your proposed changes.

License

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