Multi-Oracle-DeFi

Project Overview

The Multi-Oracle-DeFi project integrates multiple decentralized finance (DeFi) protocols powered by oracles. Users can connect their wallets to interact with three core features: a Lending-Borrowing Protocol, Lucky Draw NFT Minting, and a Price Feed Display. The oracles become activated as soon as a wallet is connected, making the DeFi operations seamless.

This project showcases the integration of smart contracts with Chainlink oracles, demonstrating real-time price feeds, secure random number generation (VRF), and lending-borrowing mechanisms. It also features a front-end, enabling users to interact directly with these blockchain-based systems.

Features

1. Lending-Borrowing Protocol

Description

The Lending-Borrowing protocol allows users to deposit ETH as collateral and borrow CUSD (Simple USD Token). The collateral value is determined using Chainlink's ETH/USD price feed, ensuring accurate and up-to-date price data. Borrowers can withdraw up to 20% of their collateral’s value in CUSD, a token minted by the protocol.

Technical Architecture

• Smart Contracts:
  • LendingBorrowing Contract: Manages ETH deposits, collateralization, CUSD borrowing, and debt repayment.
  • Chainlink Price Feed Integration: Fetches the ETH/USD price for collateral valuation. Uses chainlink price feed oracles.
  • CapstoneUSD Contract: Handles the minting, transferring, and burning of CUSD tokens.
• Frontend:
  • Built with React and Web3 integration using wagmi and viem libraries.
  • Allows users to interact with the smart contracts, deposit ETH, borrow CUSD, and repay loans directly through the interface.

2. Price Feed Display

Description

The price feed display provides real-time cryptocurrency prices, including LINK, BTC, ETH, SOL, and MATIC, fetched from Chainlink Price Feeds. This integration allows the frontend to display accurate and secure price data directly from a decentralized oracle network.

Technical Architecture

• Smart Contracts:

  • Price Feed Contract: Utilizes Chainlink oracles to fetch live price data for major cryptocurrencies.

• Frontend:

  • Developed in React, the UI displays real-time prices using a simple price-feed widget that queries the on-chain price data.
  • Uses wagmi and viem for Web3 wallet connection and blockchain interactions.

3. Lucky Draw NFT (with Chainlink VRF)

Description

The Lucky Draw NFT system allows users to mint NFTs with random attributes generated by Chainlink VRF (Verifiable Random Function). Each mint produces an NFT with unique traits, creating a gamified experience around decentralized random number generation.

Technical Architecture

• Smart Contracts:

  • NFT Minting Contract: Integrated with Chainlink VRF to securely generate random attributes for each NFT.
  • Chainlink VRF: Ensures verifiably random results for NFT attributes, providing fairness in the minting process.
  • IPFS: Stores NFT metadata and images for decentralized accessibility.

• Frontend:

  • Simple React interface for users to connect their wallet and mint NFTs. Displays the minted NFTs and their randomly generated attributes.
  • Web3 integration using wagmi and viem for interaction with the blockchain contracts, minting functionality, and display of NFTs.

Technology Stack

• Blockchain:

  • Smart contracts written in Solidity.
  • Chainlink oracles for price feeds and VRF (Verifiable Random Function).
  • Deployed on Polygon Amoy Testnet for testing and demonstration purposes.

• Frontend:

  • Built with React.
  • Web3 integration using wagmi and viem for wallet connection and contract interaction.
  • IPFS for decentralized storage of NFT metadata.

Contributions

We welcome contributions! Please read our contributions.md file for guidelines on how to contribute to this project.

Deployment

The project is live here.

License

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