Project: Collateralized Loan Smart Contract Development

In this project, you will develop, deploy, and interact with a simple collateralized loan contract on the Ethereum blockchain using Solidity. This contract will manage loans backed by Ethereum as collateral, offering hands-on experience with real-world financial smart contracts.

Getting Started

Use the following command to clone the repo:

git clone Getting https://github.com/udacity/cd13282-blockchain-with-solidity-project

cd cd13282-blockchain-with-solidity-project

Once you have the starter code, head over to the starter directory. You will notice one folder: hardhat-js . We have mostly been using Hardhat with JavaScript.

Dependencies

We will mostly use Hardhat for this project to write, deploy, and test the smart contract.

Installation

If you are using Udacity's workspace, you do NOT need to install any software packages.

If you are using your local environment, head over to hardhat-js and install the necessary dependencies using the following command.

npm install

You will also find a file .env.example , you will need to create a .env file similar to that.

INFURA_API_KEY=
ACCOUNT_PRIVATE_KEY=

Add your wallet private key and infura API key.

Testing

Head over to test folder and create a new file to write the tests.

Project Deliverables

1. Deploy the Smart Contract on Sepolia Testnet

• Successfully deploy your Collateralized Loan smart contract to the Sepolia testnet.

2. Write the Smart Contract and Hardhat Test Script

• Develop and finalize the Solidity code for the Collateralized Loan contract.
• Write comprehensive test scripts using Hardhat to validate the contract's functionalities.

3. Etherscan Verification

• Provide a link to the Sepolia Etherscan page confirming the successful deployment of your contract.
• The Etherscan link should display the contract address and transaction details on the Sepolia testnet.

4. GitHub Repository Link

• Submit the link to your GitHub repository containing the project.
• The repository should include:
  • The Solidity smart contract code.
  • Hardhat test scripts.
  • A README file containing the Sepolia Etherscan link of the deployed contract

Notes for Submission

• Ensure that the GitHub repository is public and accessible.
• Double-check the Etherscan link to ensure it directs to the correct contract and network.
• The smart contract code should be well-commented for clarity and understanding.
• Hardhat Test Scripts should cover all critical paths and edge cases in the contract functionality.
• The README must contain the Sepolia Etherscan link of the deployed contract.

License

License