Precious Metals Oracle Demo DApp

A decentralized application demonstrating real-time price feeds and data-dependent smart contract operations using the Morpher Oracle for precious metals markets.

Overview

This DApp showcases the implementation of Data-Dependent User Operations in Web3, featuring:

• Real-time precious metal price feeds (XAG/USD, POL/USD)
• ERC4337 Account Abstraction
• NFT minting based on live market data
• Automated oracle price updates
• Smart contract interaction with verified price data

How It Works

1. Creates an ERC4337 Safe Wallet for secure transactions
2. Fetches real-time Silver (XAG/USD) and Polish Złoty (POL/USD) price data
3. Executes bundled ERC4337 transactions:
   • First UserOp: Updates oracle with latest price data
   • Second UserOp: Mints Silver NFT with current market prices

Tools & Technologies

• Smart Contracts: Solidity, ERC4337, ERC721
• Frontend: Next.js, React, TypeScript, Tailwind CSS
• Web3 Integration: wagmi, viem
• Oracle: Morpher Oracle for real-time price feeds
• Development: Foundry (Forge, Anvil, Cast)

Links & Resources

• Technical Blog Post
• Morpher Oracle Documentation
• Live Demo
• ERC4337 Account Abstraction Specification

Getting Started

# Install dependencies
npm install

# Run development server
npm run dev

# Deploy contracts
forge script script/DeployCoins.s.sol

Contributing

Contributions are welcome!

License

MIT License - see LICENSE file for details