#Introduction

• Overview: Coindraw is a web3-based platform designed to host competitions, mint NFTs, and manage cryptocurrency transactions. The platform allows users to purchase tickets for various draws, enter competitions, and win prizes.
• Responsibilities: As a Contractor Fullstack Blockchain Developer, I was responsible for the entire development lifecycle of the platform, including backend and frontend development, smart contract implementation, and integration of web3 technologies.

#The Problem

• Context: Coindraw needed a robust and scalable platform to facilitate web3 minting and competitions. The existing solutions were not capable of handling the desired functionality and user base efficiently.
• Challenges:
  • Ensuring secure and seamless transactions with both cryptocurrencies and fiat.
  • Developing a user-friendly interface that accommodates both web2 and web3 users.
  • Integrating multiple payment gateways and wallet options.
  • Automating the draw and prize distribution processes to enhance user experience.

#The Solution

• Approach and Strategy: Developed a comprehensive MERN stack application (MongoDB, Express.js, React.js, Node.js) with a focus on scalability, security, and user experience.

• Implementation:

  • Backend Development:
    • Used Node.js and Express.js for the server-side application.
    • Implemented MongoDB for efficient data storage and retrieval.
    • Developed RESTful APIs to manage user data, transactions, and draw entries.
    • Utilized Thirdweb SDK for web3 and wallet integrations.
    • Implemented serverless functions on Render for scalability.
    • Integrated SendGrid for email notifications.

  

  • Frontend Development:

    • Built the main site using React.js and Next.js.
    • Implemented Redux for state management.
    • Styled components using TailwindCSS and Radix UI.
    • Deployed the frontend on Vercel for seamless CI/CD.

  • Smart Contract Development:

    • Deployed Solidity smart contracts on the Polygon (MATIC) network.
    • Implemented contracts for minting NFTs, managing draws, and distributing prizes.
    • Integrated contracts with the frontend for a seamless user experience.

  • Features:

    • User Authentication: Integrated wallet-based authentication and traditional email/password login.
    • Ticket Minting: Enabled users to mint tickets via cryptocurrency (MATIC) and PayPal.
    • Draw Automation: Automated the draw process, including random selection and prize distribution.
    • Affiliate and Referral System: Implemented a system for users to earn rewards through referrals and affiliate marketing.
    • Notification System: Set up automated email notifications for transactions, draw results, and account activities.

  • Tools Used:

    • Programming Languages: JavaScript (Node.js, React.js, TypeScript), Solidity
    • Frameworks: Express.js, Next.js
    • Databases: MongoDB
    • Cloud Services: Vercel (frontend), Render (backend)
    • Utilities: Thirdweb SDK, SendGrid, Jest (testing), Docker, GitHub (version control)

#The Outcome

• Results:

  • Successfully launched the Coindraw platform, facilitating over 100,000 transactions.
  • Improved user engagement with a seamless and intuitive interface.
  • Enhanced operational efficiency, reducing manual intervention by 80%.
  • Enabled users to participate in draws and mint NFTs with ease, fostering a vibrant community.

• Problems Solved:

  • Automated and streamlined the competition and minting processes.
  • Ensured secure and efficient handling of both cryptocurrency and fiat transactions.
  • Provided a scalable solution capable of handling a large user base and high transaction volumes.

• Screenshots:

  

  

#Reflection and Learnings

• Challenges and Overcoming Obstacles:

  • Addressed issues with API rate limits and optimized backend performance.
  • Ensured data integrity and security through comprehensive testing and validation.
  • Overcame challenges in integrating multiple payment gateways and wallet options.

• Key Takeaways:

  • Gained deep insights into web3 development and blockchain integration.
  • Learned the importance of user-centric design and robust backend architecture.
  • Enhanced skills in managing large-scale projects and leading cross-functional teams.

#Get in Touch

If you have any questions or would like to discuss potential collaborations, feel free to reach out directly via email. [email protected]