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A newer version of the Streamlit SDK is available: 1.54.0

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metadata 
title: Invoice-Flow AI
emoji: 📄
colorFrom: blue
colorTo: purple
sdk: streamlit
sdk_version: 1.31.1
app_file: app.py
pinned: false

Invoice-Flow AI

Agentic invoice verification & on-chain trust registry

Invoice-Flow AI is a hackathon prototype that automates invoice verification using:

  • Multimodal AI (Gemini 1.5 Flash)
  • Human-in-the-loop buyer consent
  • Blockchain-based replay protection

The system prevents invoice fraud and double-financing while reducing verification costs from ₹500+ to under ₹5 per invoice.

🚀 Demo Flow

  1. Upload an invoice PDF
  2. AI extracts structured data
  3. Buyer approval (simulated UI)
  4. Verified receipt minted on Polygon
  5. Transaction visible on PolygonScan

🧠 Architecture Overview

  • AI Layer: Gemini 1.5 Flash (PDF → JSON)
  • Consent Layer: Buyer approval UI (Webhook-ready)
  • Settlement Layer: Polygon Amoy (EVM-compatible)
  • Security: SHA-256 hashing for replay protection

🛠 Tech Stack

  • Streamlit
  • Google Gemini 1.5 Flash
  • Web3.py
  • Polygon Amoy Testnet

🔐 Secrets Required (Hugging Face)

Add the following in Settings → Variables:

  • GEMINI_API_KEY
  • RPC_URL
  • PRIVATE_KEY

⚠️ Do NOT commit secrets to the repository.

⚠️ Disclaimer

This is a hackathon prototype.
Production deployments would replace UI consent with secure webhooks and cryptographic buyer signatures.