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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: 40209503
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27 freelancers are bidding on average ₹111,593 INR for this job

With a solid 9+ years of experience in web development and mobile applications, I can assure you of my expertise in delivering a well-designed, high-quality solution for your Blockchain Certificate Verification Web App project. My proficiency in JavaScript and Node.js positions me favorably to address the core functionalities you require, such as secure user registration, certificate upload and hashing on a blockchain network, and instant validation results. Additionally, my work with E-commerce and CMS-based websites speaks to my ability to handle complex data workflows efficiently. I welcome the challenge of designing a tamper-proof hashing workflow that can scale effectively as your service gains traction. Furthermore, as part of my deliverables, I provide comprehensive documentation and support beyond project completion. My services conclude only when you're confidently running on your own. Trust in me to take your idea from conception to reality with an effective cost structure that accommodates your budget without compromising on quality. Let's discuss a detailed strategize approach that aligns perfectly with your requirements and timeline today!
₹25,000 INR in 7 days
5.2
5.2

Having spent over 7 years in software development, I have gathered a rich portfolio of skills including but not limited to your project requirements. My proficiency in Node.js and React.js, both for frontend and backend development, perfectly suits your choice of platforms for this blockchain web app. Not only will I write clean codes and provide clear documentations as you desire, but also ensure the tamper-proof hashing workflow is fashioned to scale as usage grows giving utmost importance to client satisfaction. In addition to my technical qualifications, I am a keen adherent of meeting client expectations because that’s at the center of my service delivery philosophy. In regard to timeline, you can expect nothing short of satisfactory time management from me as demonstrated in my past projects. As a seasoned developer in various domains which include web development and app development precisely like yours, I am confident that our collaboration will result in an elegant end product capable of withstanding thorough scrutiny during testing and providing solid support for onboarding users and admins through simple yet comprehensive manuals.
₹12,500 INR in 7 days
6.3
6.3

Hello, I’ve carefully reviewed your project details, and it genuinely sounds exciting. I’d be glad to contribute my experience to help make it a success. With over 10 years of hands-on experience in blockchain, web, mobile, and software development, I’ve worked with clients across the globe and successfully delivered 500+ projects to date. My team and I bring strong expertise in blockchain technologies, including Solidity, Rust, Stylus, EVM-compatible chains, and Clarity, with hands-on experience delivering award-winning projects on the Avalanche and Arbitrum chains. Alongside blockchain development, we have deep proficiency in MEAN/MERN stacks, Flutter, React Native, PHP, Laravel, Python, AI-driven solutions, CRM/CMS platforms, and DevOps, enabling us to build secure, scalable, and high-performance digital products end to end. What drives me most is solving complex problems and transforming ideas into scalable, secure, and user-friendly products. I place high value on clear communication, transparency, and dependable delivery, ensuring clients feel confident in their decision to work with us. You can review my portfolio here: https://www.freelancer.in/u/NareshJoshiTech I’d appreciate the opportunity to discuss your project in more detail and explore how we can build something impactful together. Looking forward to your response. Warm regards, Naresh Joshi
₹25,000 INR in 7 days
2.6
2.6

I can create a reliable and secure Blockchain-based certificate verification web app that ensures accurate verification and a smooth user experience. I am ready to start immediately and deliver quality results on time. Regards, Bharti
₹25,000 INR in 7 days
2.2
2.2

Hello, I’m Ankur, a freelance developer with a dedicated team of professionals. I read all your requirements for website and I assure you that I will provide high-quality work at the proper time. Additionally, we also provide you 3 months of support from our side. As a Full Stack Developer, I specialize in Web and App Development, boasting a portfolio of stunning projects with top-notch UI/UX design. My expertise spans Flutter (for both Android and iOS), PHP, and WordPress, and I bring over 7 years of experience to the table. Whether it’s websites, applications, or e-commerce platforms, I’ve got you covered. But I’m not limited to just coding. My skill set extends to graphic design and logo creation, offering you a one-stop solution for all your project needs. With a track record of over 500 completed projects, I am committed to delivering nothing short of excellence. My ultimate goal is your complete satisfaction. Thank you for considering me for your project. I’m ready to transform your vision into a reality that stands out in today’s competitive landscape. Best Regards, Ankur Hardiya
₹25,000 INR in 7 days
0.2
0.2

As a dedicated full-stack developer with experience in FastAPI (which you express as an option) and a proven track record of creating robust, high-performing web applications, I believe I'm the ideal fit for your Blockchain Certificate Verification Web App project. In addition to my technical proficiency, I also have extensive knowledge and experience in blockchain integration which will be crucial for the tamper-proof authentication system your application seeks to employ. Fully comprehending the importance and complexities of verifiable certificates in today's world, especially within the educational domain, my approach to this project will prioritize three main aspects: security, scalability, and usability. I understand that implementing a robust yet reliable certificate verification system that combines user-friendliness with back-end functionality is key to your project. My deep experience makes me uniquely qualified to deliver this outcome. Moreover, my ability to perform well under pressure ensures minimal turnaround time on test-feedback loops and thorough bug checks - no critical bugs during testing are my guarantee.
₹28,000 INR in 12 days
0.4
0.4

Hello, I’ve carefully reviewed your project details, and it genuinely sounds exciting. I’d be glad to contribute my experience to help make it a success. With over 10 years of hands-on experience in blockchain, web, mobile, and software development, I’ve worked with clients across the globe and successfully delivered 500+ projects to date. My team and I bring strong expertise in blockchain technologies, including Solidity, Rust, Stylus, EVM-compatible chains, and Clarity, with hands-on experience delivering award-winning projects on the Avalanche and Arbitrum chains. Alongside blockchain development, we have deep proficiency in MEAN/MERN stacks, Flutter, React Native, PHP, Laravel, Python, AI-driven solutions, CRM/CMS platforms, and DevOps, enabling us to build secure, scalable, and high-performance digital products end to end. What drives me most is solving complex problems and transforming ideas into scalable, secure, and user-friendly products. I place high value on clear communication, transparency, and dependable delivery, ensuring clients feel confident in their decision to work with us. You can review my portfolio here: https://www.freelancer.in/u/Suman Joshi I’d appreciate the opportunity to discuss your project in more detail and explore how we can build something impactful together. Looking forward to your response. Warm regards, Suman Joshi
₹26,000 INR in 7 days
0.0
0.0

I understand the goal is to build a secure certificate verification system using blockchain. When a student uploads a certificate, the system generates a SHA-256 hash and stores it on Polygon for low-cost, immutable validation. Anyone can later re-upload the file to verify authenticity by matching the on-chain hash. The platform will be secure, scalable, and production-ready.
₹25,000 INR in 7 days
0.0
0.0

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