medX: Product Overview

• Patient Onboarding

  • Patients create and manage profiles using Smart Accounts (Alchemy).
  • Provides a secure, decentralized identity for interaction with healthcare services.

• Doctors/Healthcare Providers Onboarding

  • In addition to generating Smart Accounts, World ID verification is conducted.
  • Ensures the authenticity and credibility of healthcare professionals within the medX ecosystem.

• Appointment Scheduling

  • Patients schedule appointments with doctors on their preferred blockchain.
  • Payment is made on the patient's chosen chain, and doctors receive payment on their preferred chain using the CCIP MultiHop router.

• Medical Examination

  • Doctors conduct patient assessments and, if necessary, connect patients to healthcare providers for further evaluation or treatment.

• Record Creation and Attestation

  • Healthcare providers create medical records for patients.
  • Records are attested on-chain using Ethereum Account Service (EAS), supported by Alchemy's SendUserOps and gas sponsorship.

• Prescription Management

  • Doctors process medical records and generate prescriptions.
  • Prescriptions are attested on-chain using EAS with the support of SendUserOps and gas sponsorship.

• Prescription Redemption

  • Patients redeem prescriptions by paying dues using SendUserOps.
  • Gas sponsorship covers transaction fees, making the process cost-effective and straightforward.

Building medX was all about bringing together the right technologies and tools to create a smooth, decentralized healthcare experience. Here's a straightforward look at how we did it:

Technologies and Tools Used

• Backend: Node.js

  • What it does: Handles all the server-side logic, APIs, and interactions with the blockchain.
  • How we used it: We utilized Node.js to manage the backend, ensuring efficient handling of requests, data processing, and secure communication with the blockchain.

• Frontend: Next.js

  • What it does: Powers the user interface, allowing users to interact with medX in a smooth and responsive way.
  • How we used it: Next.js was chosen for its server-side rendering capabilities, making the frontend fast, scalable, and SEO-friendly.

• Smart Accounts (Alchemy)

  • What it does: Patients and healthcare providers create and manage their profiles securely, without needing centralized systems.
  • How we used it: We used Alchemy’s tools to make the process of setting up and managing accounts easy and secure.

• CCIP MultiHop Router

  • What it does: Allows patients to pay on one blockchain, and doctors to receive the payment on another.
  • How we used it: We created custom code that routes payments through the CCIP MultiHop router, making sure transactions work smoothly, even if they're happening on different blockchains.

• Ethereum Account Service (EAS)

  • What it does: Keeps medical records and prescriptions safe on the blockchain.
  • How we used it: We utilized EAS's private data schema to generate relevant zkProofs, ensuring that patient records maintain privacy while securely storing medical data on-chain.

• SendUserOps and Gas Sponsorship (Alchemy)

  • What it does: Simplifies transactions and covers gas fees (the cost of transactions on the blockchain).
  • How we used it: We used this to make sure users don’t have to worry about transaction costs, making the platform more user-friendly.

• World ID Verification

  • What it does: Verifies the identity of healthcare providers.
  • How we used it: When doctors and healthcare providers join the platform, we make sure they are who they say they are using World ID verification.

Partner Technologies

• Alchemy

  • Why it’s important: Alchemy provided the tools that made account management and transaction handling easier, allowing us to focus on building the core features of medX.

• CCIP (Cross-Chain Interoperability Protocol)

  • Why it’s important: This allowed us to create a system where payments can happen across different blockchains, making it easier for users to transact in the cryptocurrency they prefer.

• Blockscout

  • Why it’s important: We used Blockscout to verify payments, ensuring that all transactions on the platform are transparent and secure.

• Contracts on Base, Optimism, and Celo

  • Why it’s important: By deploying contracts on these blockchains, medX can operate on multiple networks, ensuring scalability, efficiency, and security.

Hacky Solutions and Notable Mentions

• Custom Cross-Chain Logic

  • We created custom logic to handle payments that move across different blockchains, making sure transactions don’t fail or get delayed.

• Creating the CCIP MultiHop Router for Chainlink

  • We were directly involved in developing the CCIP MultiHop router, a key feature that enables seamless cross-chain payments, ensuring that users can transact on their preferred blockchains without issues.

• Gas Optimization

  • We worked hard to minimize transaction costs while keeping the platform easy to use, making sure users don’t get stuck with high fees.

• World ID Integration

  • Verifying the identities of healthcare providers was crucial. We integrated World ID to make sure that only verified professionals are part of medX, building trust within the platform.

• zkProof for Privacy in Medical Records

  • We used EAS's private data schema to generate zkProofs, ensuring that patient records maintain privacy while securely storing medical data on-chain.