Build Decentralized Apps with Solidity, Next.js, and Hardhat

Learn to write secure smart contracts and connect them to modern web frontends by building a fully functional decentralized marketplace from scratch.

4.2 (410) ⏱ 34 min 📚 10 lessons 🎧 Audio version

About this course

The transition from traditional web development to Web3 can feel overwhelming with so many moving parts. This text-based course demystifies decentralized application (Dapp) development, guiding you step-by-step through the entire lifecycle of building blockchain-powered applications. By reading the detailed explanations and working through real-world code snippets, you will bridge the gap between smart contracts and modern web interfaces. You will gain the confidence to design, test, and deploy secure Solidity contracts and integrate them seamlessly with a Next.js frontend, utilizing industry-standard tools like Hardhat, Ethers, and OpenZeppelin. What you'll learn: - Understand the foundational concepts of blockchain technology, smart contracts, and Web3 architecture. - Write secure, standard-compliant smart contracts using Solidity and OpenZeppelin library standards. - Configure a robust local development and testing environment using Hardhat to compile and deploy contracts. - Build responsive, modern web frontends with Next.js and Tailwind CSS that interact with the blockchain. - Connect frontend applications to smart contracts using Ethers and manage decentralized data hosting with IPFS. - Apply modern Web3 development practices, including optimized gas usage and secure state management. The course begins with essential Web3 terminology and foundational blockchain concepts before guiding you through writing your first smart contract. You will then progress naturally to building a fully operational decentralized marketplace, connecting the backend contracts to a sleek frontend interface. This course is designed for web developers, software engineers, and curious beginners who want to transition into Web3 development; no prior blockchain or smart contract experience is required. Start reading today to unlock the skills needed to build the future of the decentralized web.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 30-day refund
    No questions asked
  • Short & focused
    34 min of practical content

Reviews (3)

Noah Schulz AT Verified learner
★ 2 · 2025-11-07T18:20:55+00:00

Pretty informative. I liked the practical application examples, though the initial setup took longer than I expected.

정우진 KR Verified learner
★ 4 · 2025-11-05T11:35:55+00:00

Solid content here. While a couple of the modules could have been more detailed, the overall value and applicability are high. Good job!

مريم بنت أحمد بن راشد آل ثاني QA Verified learner
★ 3 · 2025-04-22T07:37:55+00:00

Tbh, I expected more practical application. It felt a bit too theoretical for my needs, though the core concepts were explained okay.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe, or with cryptocurrency. We do not store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 30 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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