Health Chain

Our dApp rewards users with Reward Tokens for fitness, using AI and Chainlink for BMI validation. Earn RWD tokens to buy and trade NFTs. Secure login via MetaMask. Deploy NFTs for advertisements.

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Inspiration

Our inspiration for this project came from the desire to merge health and technology in a way that motivates people to stay fit while leveraging the benefits of blockchain.

We saw an opportunity to use AI for accurate health assessments and blockchain for secure, transparent rewards and transactions. By integrating Chainlink VRF, we ensure fairness and security in our system. ### Our goal is to create a community where users are rewarded for their health efforts and can engage with digital assets in a meaningful way. This project aims to make fitness fun, rewarding, and part of the digital economy.

What it does

Rewardable NFT Ownership

  • Purchase Unique NFTs: Acquire distinctive NFTs that can grant rewards like some gems in Clash of Clans per month, premium of a service (if they deploy their NFT).
  • Earn by Holding and Selling: Earn back a portion of your investment when you sell the NFT.

Healthy Lifestyle Incentives

  • BMI-Based Rewards: Upload your weekly Body Mass Index (BMI) to earn reward tokens. The system encourages progress towards a healthy BMI range.
  • Health Tracker: Track your health with our smart dApp with all things decentralised and no fear of private data leaking.

Dual BMI Verification

  • AI Image Analysis: Secure body posture and structure monitoring using AI and Machine Learning.
  • Doctor-Certified BMI Certificates: Upload doctor-certified BMI calculation certificates authenticated by Chainlink oracles.

Chainlink Integration

  • Data Feed Verification: Chainlink's Data Feed verifies doctor names and hospital credentials for certificate authenticity.
  • Randomized NFT Minting: Securely generate unique NFT addresses using Chainlink's Verifiable Random Function (VRF) for fair and transparent distribution.
  • Cross-Chain Functionality: Enable seamless asset transfer between different blockchains with Chainlink's Cross-Chain Link (not applicable).

How we built it

  • Blockchain: Ethereum blockchain
  • Smart Contracts: Solidity
  • Front-End Development: React
  • Decentralized Oracle Network: Chainlink
  • Backend AI processing: Python, spacy, opencv

📅 Roadmap

  • Phase 1: Launch the NFT marketplace and reward system.
  • Phase 2: Integrating AI for BMI and posture measurement.
  • Phase 3: Development of NFT details for further insights.
  • Phase 4: Company perspective NFT deployment for promotion of company deploying respective NFT.

Challenges we ran into

  1. Using Chainlink services and understanding how to call off chain APIs from chainlink.
  2. Smart contract debugging while passing the data between input and output.
  3. Minimizing gas cost in the contract.

Accomplishments that we're proud of

  1. Building efficient smart contracts with minimum gas used.
  2. Connecting onchain data with the offchain with Chainlink services
  3. Integrating image analysis by AI to judge person psoture of a human.

What we learned

  1. Building fast and efficient smart contracts.
  2. DeFi architecture and implementation.
  3. Using chainlink services for making robust and high quality services.

What's next for Health Chain

  1. Implementing full analysis of persons journey on Health Chain.
  2. Implementing Chainlink functions and more validation at each step.
  3. Partial ownership trading of NFTs.
  4. Full fledged Cross chain NFT transformation.

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