Umbra Helix | Aztec NFT Ownership verifier for Discord

.gitignore

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+target

umbra-helix/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+node_modules
+.cert
+.env
+.env.local

umbra-helix/README.md

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+# UmbraHelix
+
+UmbraHelix is an Aztec NFT Ownership verifier for Discord. It also has other useful features like creating collection, minting nft, public and private transfer and to fetch nft owner.
+
+Developers can use UmbraHelix by installing the sdk from npm.
+
+## Challenge Selection
+- [x] Social Cipher 
+- [ ] ZKEmail Guardian
+
+## Team information
+- **Satyam Bansal** - Full stack developer and open source contributor, Kernel community fellow
+  - GitHub: https://github.com/satyambnsal
+  - Twitter: @satyambnsal
+  - Email: satyamsgsits1994@gmail.com
+
+- **Yash Mittal** - UI developer
+  - GitHub: https://github.com/yassmittal
+
+## Video Demo
+https://www.loom.com/share/22de26bc290a4326bac074992e3338c9?sid=064cd65f-12c3-4270-a2ff-3e3eaf99496a
+
+## Technical Approach
+
+### Main Components:
+1. **NFT Smart Contract**
+- Custom NFT contract written in Noir enabling both public and private transfers
+- Support for collection creation, minting, and ownership verification  
+- Located in `contracts/nft_contracts`
+
+2. **Client SDK**
+- TypeScript SDK for easy integration
+- Support for wallet creation, collection management, and NFT operations
+- Privacy-preserving ownership verification functions
+
+3. **Discord Integration** 
+- Bot interface for role management based on private NFT ownership verification
+- Private membership verification without exposing full ownership details
+
+### Key Aztec Features Used:
+- Private state for NFT ownership records
+- Public/private transfer functions 
+- AuthWit for delegated operations
+- PXE integration for client-side proof generation
+
+## Expected Outcomes
+- Easy-to-use SDK for developers
+- Working Discord bot demonstrating private ownership verification
+- Documentation and examples for building privacy-preserving social applications
+
+## Lessons Learned (For Submission)
+- Implementing privacy-preserving ownership verification requires careful consideration of information leakage
+- Pattern for handling both public and private NFT transfers while maintaining privacy
+- Best practices for PXE integration and client-side proof generation
+- Reusable patterns for Discord bot integration with private state verification
+
+## Project Links
+- GitHub Repository: https://github.com/umbra-privacy/umbra-helix
+- Documentation & Examples: [To be added]
+
+
+
+### Installation & Usage
+```bash
+# Clone the repository
+git clone https://github.com/umbra-privacy/umbra-helix
+
+cd umbra-helix
+
+# Install dependencies
+bun install
+
+# Start development server
+bun run dev

umbra-helix/contracts/nft_contracts/Nargo.toml

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+[package]
+name = "nft_contract"
+type = "contract"
+authors = ["Satyam Bansal <satyamsgsits1994@gmail.com>"]
+compiler_version = ">=0.33.0"
+
+[dependencies]
+aztec = { git = "https://github.com/AztecProtocol/aztec-packages/", tag = "aztec-packages-v0.60.0", directory = "noir-projects/aztec-nr/aztec" }
+value_note = { git = "https://github.com/AztecProtocol/aztec-packages/", tag = "aztec-packages-v0.60.0", directory = "noir-projects/aztec-nr/value-note" }
+compressed_string = { git = "https://github.com/AztecProtocol/aztec-packages/", tag = "aztec-packages-v0.60.0", directory = "noir-projects/aztec-nr/compressed-string" }
+authwit = { git = "https://github.com/AztecProtocol/aztec-packages/", tag = "aztec-packages-v0.60.0", directory = "noir-projects/aztec-nr/authwit" }
+easy_private_state = { git = "https://github.com/AztecProtocol/aztec-packages/", tag = "aztec-packages-v0.60.0", directory = "noir-projects/aztec-nr/easy-private-state" }

umbra-helix/contracts/nft_contracts/codegenCache.json

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+{
+  "nft_contract-Counter.json": {
+    "contractName": "Counter",
+    "hash": "774eb477ea6f8b020b11b48c759143a7745f73073628c94f9ded1dfd2f6a24cf"
+  },
+  "nft_contract-NFT.json": {
+    "contractName": "NFT",
+    "hash": "267d2623b816deec6174ceb2f5330d9f4ba7353074e8fa03be478616f5730d5c"
+  }
+}