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I need a complete, student-facing web application that lets users prove the authenticity of their academic certificates through blockchain hashing. The flow is straightforward: a student signs up, uploads a certificate, and immediately receives an on-chain validation record that anyone can later cross-check online. I have [login to view URL] half work done and pages are created Core functionality • Secure user registration and login with email or social auth • Certificate upload, automatic hashing, and immutably storing the hash on a blockchain network (Ethereum or any suitable L2 you recommend) • Instant on-screen validation result plus a shareable verification link • Admin dashboard where I can review submissions, view analytics, and revoke or re-issue hashes when needed Tech notes I’m open to React, [login to view URL], or similar for the front-end, and Node.js, Python (FastAPI), or comparable for the back-end. What matters most is clean code, clear documentation, and a tamper-proof hashing workflow that can scale as usage grows. Deliverables 1. Fully functional web app deployed to a cloud host (AWS, Azure, or Vercel). 2. Source code in a private Git repo with setup instructions. 3. Simple user and admin manuals (PDF or Markdown). 4. A short demo video or live walkthrough proving a certificate is hashed, stored, and later verified. Acceptance criteria • Registration, login, upload, and validation all work in the live environment. • Hashes appear on the blockchain explorer and match the files uploaded. • Admin dashboard shows real-time stats and allows manual certificate status changes. • No critical bugs during a two-day test window. If you have experience with blockchain integrations, especially certificate or credentialing projects, I’d love to see a quick outline of your approach and timeline.
Project ID: 40206405
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36 freelancers are bidding on average ₹8,181 INR for this job

Hi ashieshr, I have over 5+ years of experience in both frontend and backend development. I will do the specified tasks. Key Areas of Expertise: a) Full-Stack Development: Proficient in both frontend and backend technologies Frontend: Next, Js, ReactJS, Bootstrap, JavaScript, jQuery Backend: Laravel, CodeIgniter, Node.js b) API Integration: Experienced in integrating and working with APIs to enhance application functionality. c) Microservices: Skilled in developing and integrating microservices for scalable and efficient solutions. d) Database Management: Competent in managing databases with Postgresql, MySQL, MongoDB, and Oracle. d) Server Handling: Adept at handling server environments such as AWS, Google Cloud, VPS, Apache, and Nginx. Let’s discuss how I can help achieve your project goals and add value. Lets connect in chat so that We discuss further. With Regards, Sai
₹6,600 INR in 2 days
6.6
6.6

Hey there, I'm excited to work on your Blockchain Certificate Verification Web App project. With my expertise in Python, JavaScript, Node.js, and software architecture, I'll create a seamless user experience with secure registration/login, certificate upload, and instant validation. Utilizing React and Node.js, I'll ensure a tamper-proof hashing workflow integrated with Ethereum or a recommended L2 network. The deliverables will include a deployed web app, source code in a private Git repo, user/admin manuals, and a demo video. Let's discuss your project requirements further! How can I assist you with [clientQuestion]?
₹7,770 INR in 1 day
5.7
5.7

Hi there. I have carefully reviewed your requirements for a student-facing certificate validation web application. With over 4 years of experience in Solidity, Node.js, and React, I can transition your existing Bubble logic into a high-performance, custom-coded application. I specialize in secure hashing workflows and blockchain integration, ensuring that academic records are immutably stored and easily verifiable via on-chain records. My expertise in Ethereum and Layer 2 solutions allows me to recommend the most cost-effective and scalable network for your project. I will ensure a clean separation between the student-facing upload portal and the administrative management dashboard, including full support for certificate revocation and re-issuance. You can find detailed examples of my previous dApp and smart contract work in my portfolio attached to my profile.
₹60,000 INR in 25 days
3.4
3.4

Hello, I’ve gone through your project details carefully, and I must say it sounds really interesting. I’d love to bring my experience to make it a success. With over 10 years of hands-on experience in web, mobile, and software development, I’ve had the privilege of working with clients from around the world — delivering 1000+ successful projects so far. My team and I are comfortable working with technologies like MEAN, MERN, Flutter, React Native, PHP, Laravel, Python, WordPress, Shopify, AI, Blockchain, CRM, CMS, and more. What truly drives me is solving complex challenges and transforming ideas into reliable, user-friendly products. I always aim for clear communication, transparency, and results that make clients feel confident they chose the right partner. You can review my portfolio here: https://www.freelancer.in/u/NareshJoshiTech I’d really appreciate the chance to discuss your project in detail and explore how we can create something great together. Looking forward to hearing from you. Warm regards, Naresh Joshi
₹10,000 INR in 7 days
2.6
2.6

Hi there, I’m Robert, a Senior Full-Stack & AI Engineer with over 10 years of experience architecting and delivering SaaS platforms, automation systems, and intelligent applications, showcasing top skills in blockchain integration, clean architecture, and user-centric designs. I recently developed a blockchain-based verification system for academic credentials, allowing users to securely upload documents and receive on-chain validations, ensuring authenticity at every step. My expertise in both frontend and backend technologies, particularly React and Node.js, aligns well with your vision for a clean, scalable web app. I can complete this project perfectly and deliver scalable, production-ready results. I also prioritize clean architecture, structured documentation, CI/CD automation, and OWASP-based security practices to ensure the integrity of your application. Let’s connect to refine your requirements and begin building a solution that exceeds expectations. What specific features are essential for the admin dashboard beyond basic analytics? Best regards,
₹12,500 INR in 30 days
2.7
2.7

Hey! I’ve already built a blockchain-based credentialing system that solves this exact problem. While most developers struggle with gas fees and latency, I’ve successfully implemented a high-speed hashing workflow that anchors document fingerprints to Polygon/L2 for instant, cost-effective verification. Recent work sample: https://www.freelancer.in/projects/react-js/React-Commerce-Site-Rebuild?sb=t How about let's have a chat and discuss further?
₹12,500 INR in 7 days
2.0
2.0

Hi, I reviewed your project about "Blockchain Certificate Verification Web App" and noticed that you're working with blockchain hashing for academic certificates. That tells me the main challenge here is ensuring secure, tamper-proof hashing and efficient on-chain validation that scales. I’ve worked on similar blockchain web application projects where I: - designed scalable backend APIs, - implemented secure authentication and data models, - and delivered production-ready web/mobile features. For your project, I’d suggest starting with a robust Node.js backend using FastAPI for the API to handle secure user registration, certificate hashing, and interaction with an Ethereum L2 solution for cost-effective, scalable on-chain storage. This approach minimizes future rework and optimizes performance. Before moving forward, I have one quick question: Which Ethereum Layer 2 solutions are you considering, or would you like recommendations based on your scaling and cost priorities? If this aligns with your expectations, I can outline a clear implementation plan and timeline right away. Best regards, Nilo
₹10,500 INR in 45 days
1.6
1.6

Hi, I'd love to help you complete this project. I have experience with blockchain integrations and building secure, scalable web apps. I recommend using React for the front-end and FastAPI for the back-end. I’ll ensure seamless certificate uploads, blockchain hashing, and a robust admin dashboard. My approach would focus on clean code, thorough documentation, and testing to meet your criteria.
₹10,000 INR in 7 days
0.0
0.0

I am a perfect fit for your project because you need a clean, professional, and user-friendly web app that seamlessly integrates blockchain hashing for certificate validation. Your focus on secure registration, automated certificate hashing, and an admin dashboard aligns with my approach to building scalable, tamper-proof systems. I specialize in React and Node.js with blockchain APIs to deliver well-documented, maintainable code. While I am new to freelancer, I have tons of experience and have done other projects off site involving blockchain-based authentication and admin tools. I would love to chat more about your project! im willing to do it for less money but still best quality in exchange for a good review Regards, Henrux Faurie
₹9,400 INR in 14 days
0.0
0.0

NO SATISFACTION, NO PAYMENT. Failing to implement a secure, scalable certificate verification system risks undermining trust and exposing students to fraud. Our approach ensures each certificate’s integrity is verifiable on-chain immediately upon upload, combining straightforward user experience with robust backend processes designed to grow alongside your platform. Having delivered analogous blockchain verification projects outside this platform, we offer a limited, strategic discounted rate to establish mutual trust and build our reputation here. Let’s discuss any specific questions or clarify project details with a brief reply. I’d welcome the opportunity to chat; at worst, you gain insights from a free consultation. Warm regards Liam Jasson
₹5,000 INR in 14 days
0.0
0.0

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