7 Days on Mantle: From 'Hello World' to a Full-Stack RWA dApp

Days 1-3: Foundation & Speed ## Days 4-6: Building 'EduLoan' (The RWA Case Study) ## Day 7: The Macro View ## Reflection ## LearnwithHQ #14DaysOfLearning #Mantle #Web3 #RWA #FullStackDev Introduction: The Shift to Layer 2 It’s been exactly one week since I kicked off the HackQuest Indonesia Co-Learning Camp 6: Mantle Edition. Coming fresh off the Ethereum track, the transition to Mantle Network felt like a natural evolution. This week wasn't just about learning new syntax; it was about understanding scalability and building production-ready applications on a high-performance Modular L2. Here is a retrospective of my first 7 days. The journey began by revisiting the Blockchain Trilemma. Understanding why we need L2s—to solve the Scalability constraint without sacrificing Security—set the stage for the rest of the week. Moving from theory to execution was rapid: This was the core of Week 1. The challenge was to build a Decentralized Student Loan System—a perfect use case for the current Real World Asset (RWA) narrative. I didn't want to just write code that "works"; I wanted code that scales. I focused heavily on engineering standards: The highlight was Day 6, where I integrated the smart contract with a React frontend and deployed the full-stack dApp to Vercel. Seeing the UI interact seamlessly with the blockchain—handling loan applications and approvals in real-time—was the validation I needed. Check out the project: Live Demo: eduloan-mantle.vercel.app Source Code: github.com/azharpratama/eduloan I closed the week by zooming out. I spent Day 7 researching Mantle’s specific strategy for RWAs. Reading about how they utilize their massive treasury to support deep liquidity and assets like $USDY made me realize that Mantle isn't just a fast chain; it's building a sustainable yield ecosystem. The biggest takeaway from this week is the power of the right tooling. Using Foundry for testing gave me much more confidence in my smart contract security than previous frameworks. Building EduLoan proved that with the right L2 infrastructure, we can build complex, real-world financial tools that are actually usable (cheap and fast) for the end user. Week 1 is done. The foundation is set. Ready for Week 2. Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well For further actions, you may consider blocking this person and/or reporting abuse - Day 2: I deployed my first contract on Mantle Sepolia. The difference was immediate—negligible gas fees and instant confirmations compared to L1. - Day 3: I solidified my Solidity fundamentals. I focused on ensuring logic flows and data structures were airtight before tackling the main project. - ** Gas Optimization:** Implemented Custom Errors, saving ~90% gas on reverts compared to traditional string messages. - ** Security:** Applied pull-over-push patterns and reentrancy guards to secure funds. - ** Testing:** Utilized Foundry to write a comprehensive test suite, achieving a 100% pass rate (13/13 tests) covering all edge cases.