🧠 Hedemon – Verifiable Pokémon Card NFTs Using Hedera Hashgraph

📍 EPFL – BSA Hackathon (2025)
👥 Team: Matthias Wyss, William Jallot, Yassine Wahidy
🏆 Award: 4th Place & 500 CHF Cash Prize
🔗 Code Repository: GitHub

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Hedemon is a blockchain-powered platform that transforms physical Pokémon cards into verifiable NFTs using Hedera Hashgraph.

The platform ensures authenticity, ownership, and privacy by integrating:

• Cryptographic hashing
• Smart contracts
• Machine learning-based fraud detection

Developed during the Privacy and Verifiability Hackathon hosted by the EPFL Blockchain Student Association, the solution uses a machine learning model to detect counterfeit cards prior to minting.

Authentic cards are then converted into NFTs using Hedera Token Service and Hedera Consensus Service, enabling secure, low-cost transactions with privacy-preserving techniques.

Though initially designed for Pokémon cards, the approach is scalable to other assets like ID documents or diplomas.

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🛠 Tools & Libraries:

• JavaScript
• React
• Node.js
• Python (Machine Learning)
• Hedera Token Service
• Hedera Consensus Service

🧠 Techniques:

• Blockchain
• NFTs
• Machine Learning
• Image Recognition
• Cryptographic Hashing