Saurav Kumar
@sauravkumar8178
I'm a Software Developer diving into Web Development, passionate about learning and innovating to create cutting-edge solutions.
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Wrapped up the Kwala Hacker House Hackathon 🎉 Built Audifi — AI tool for smart contract bug detection & test generation ⚡ Integrated @KWALA_official for blockchain backend automation 🔥 👉 kwala.network 📝 dev.to/sauravkumar817… #Hackathon #Web3 #AI #Blockchain
🧠 Day 25 of #30DaysOfSolidity Built my own Automated Market Maker (AMM) 💧 ✅ Liquidity pools ✅ x*y=k constant product formula ✅ LP shares & swaps ✅ Decentralized trading 🔗 dev.to/sauravkumar817… #DeFi #Blockchain #Solidity #Web3 #AMM #DEX
🏦 Day 24 of #30DaysOfSolidity Built a Secure Escrow System 🔒 Funds stay locked until conditions are met! ✅ Buyer, Seller & Arbiter roles ✅ Safe fund release / refund ✅ Deadline auto-claim ✅ Reentrancy-safe 🔗 dev.to/sauravkumar817… #Web3 #DeFi #Solidity #Blockchain
💰 Day 23 of #30DaysOfSolidity Built a DeFi Lending & Borrowing System 🏦 Like Aave or Compound — from scratch ⚙️ ✅ Lending pool ✅ Collateral checks ✅ Dynamic rates DeFi = Finance without middlemen 🚀 🔗 dev.to/sauravkumar817… #Solidity #DeFi #Web3 #Crypto #SmartContracts
🎲 Day 22 of #30DaysOfSolidity Built a Fair & Random Lottery using ⚡ Chainlink VRF (for randomness) ⚙️ Chainlink Automation (auto draws) 🧪 Foundry (testing) Blog + code 👇 🔗 dev.to/sauravkumar817… #Solidity #Web3 #Chainlink #DeFi #SmartContracts
🎨 Day 21 of #30DaysOfSolidity Built my own Digital Collectibles (NFTs) 🖼️ ✅ ERC721 + metadata ✅ Mint & transfer NFTs ✅ Foundry + React + Ethers.js Your first step into #NFTs & digital art 🚀 📖 Tutorial: dev.to/sauravkumar817… #Solidity #Web3 #Ethereum #Blockchain
🛡️ Day 20 #30DaysOfSolidity: Built a Secure Digital Vault for tokenized gold 🏦 ✅ Reentrancy-safe withdrawals ✅ nonReentrant guard ✅ Checks-Effects-Interactions ✅ Solidity + Foundry + OpenZeppelin 🔗 Tutorial & code: dev.to/sauravkumar817… #Web3 #Solidity #SmartContracts
🛡️ Day 19 of #30DaysOfSolidity Built a 🔐 Signature-Based Web3 Auth System ✅ Off-chain invites ✅ On-chain verification ✅ No whitelist 💨 Gas-efficient & secure Powered by Solidity + Foundry + Ethers.js 🔗 dev.to/sauravkumar817… #Web3 #Solidity #Blockchain #CryptoDev
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🛡️ Day 19 of #30DaysOfSolidity — Signature-Based Web3 Authentication for Private Events
🎯 Introduction Welcome to Day 19 of #30DaysOfSolidity! In this tutorial, we’ll build a...
🌾 Day 18 #30DaysOfSolidity Built a Decentralized Crop Insurance using @chainlink Oracles! ☁️ Live rainfall 🌧️ triggers automatic payouts to farmers. ⚙️ Solidity + Foundry | 💻 React + Ethers.js Read more 👉 dev.to/sauravkumar817… #Web3 #SmartContracts #Agritech
💡 Day 17 of #30DaysOfSolidity Built an Upgradeable Subscription Manager for SaaS dApps 💼 🔹 Proxy = data 🔹 Logic = functions 🔹 Upgrade via delegatecall 🚀 No redeploys, no data loss Read 👇 dev.to/sauravkumar817… #Solidity #Web3 #Blockchain #SmartContracts
🧩 #30DaysOfSolidity Day 16 Built a modular Web3 profile system using delegatecall 🔥 Add Achievements, Inventory, or Battle Stats — without touching the core! Full Foundry + React example inside. Read More: dev.to/sauravkumar817… #Solidity #Web3 #GameFi #Ethereum
🗳️ Day 15 of #30DaysOfSolidity Built a gas-efficient voting contract ⚡ Learned calldata vs memory vs storage Added EIP-712 off-chain signatures! 💡 Save gas, stay decentralized. 🔗 dev.to/sauravkumar817… #Solidity #Web3 #Foundry #EIP712
💡 Day 14 of #30DaysOfSolidity Built a 🏦 Smart Bank with modular deposit boxes (Basic, Premium, Time-Locked) managed by a central VaultManager! Learned: Interfaces, Ownership Transfer & Modularity ⚙️ 👉 dev.to/sauravkumar817… #Solidity #Web3 #Ethereum #Blockchain #Foundry
💰 Day 13 of #30DaysOfSolidity Built a Token Sale (ICO) smart contract using Foundry — users can now buy my ERC20 tokens with ETH! ⚡ 🧠 Token pricing | Secure ETH↔️Token flow | Owner controls 🔗 dev.to/sauravkumar817… #Web3 #Solidity #Blockchain #DeFi #SmartContracts
🪙 Day 12 of #30DaysOfSolidity Built my own ERC-20 token using Foundry ⚡ 💡 Learned: • transfer, approve, allowance • Mint/Burn logic • Solidity-native testing • Deploying with Forge 🚀 Token: DayToken (DAY) 🔗 Blog: dev.to/sauravkumar817… #Web3 #Foundry #Ethereum
🔐 Day 11 of #30DaysOfSolidity Built a Secure Vault using Ownable + VaultMaster for owner-only control, reentrancy protection & clean inheritance.A real-world pattern for safe fund management in #Web3 💸 🔗 dev.to/sauravkumar817… #solidity #Web3 #SmartContracts
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🏦 Day 11 of #30DaysOfSolidity — Building a Secure Vault with Ownable + VaultMaster 🔐
Hey everyone 👋 Welcome to Day 11 of my #30DaysOfSolidity challenge! Today, we’ll build a Secure...
💪 Day 10 of #30DaysOfSolidity Built FitTrack — a decentralized fitness tracker that logs workouts & emits on-chain milestones (10 workouts/week, 500 min) Learn about indexed events for filtering & real-world dApp logic dev.to/sauravkumar817… #Solidity #Web3 #Blockchain
dev.to
🏋️ Day 10 of #30DaysOfSolidity — Building a Decentralized Fitness Tracker with Events & Milestones
Introduction Today we’re building FitTrack, a decentralized fitness tracker on Ethereum!...
🚀 Startups, meet your new co-founder: AI Agents. They think, act & learn — not just chat. Here’s what I learned from Google Cloud’s Startup Technical Guide 👇 🧠 LLMs + Tools + Memory + Reasoning + Runtime Blog 👉 dev.to/sauravkumar817… #AI #AIAgents #GoogleCloud
🧩 Day 9 of #30DaysOfSolidity Learned how smart contracts talk to each other using interfaces & address casting! ⚙️ Built: 🔹 Calculator → handles math ops 🔹 MathManager → calls Calculator securely Full blog 🔗 dev.to/sauravkumar817… #Solidity #Ethereum #SmartContracts
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🧩 Day 9 of #30DaysOfSolidity — Contract-to-Contract Interaction
Smart contracts aren’t just standalone programs — they can also talk to each other. This ability to...
💰 Day 8 of #30DaysOfSolidity Built a Multi-Currency Tip Jar! 🌍 Send Ether 💎 or simulate USD/EUR tips — a global “Buy Me a Coffee ☕” on-chain. 💡 Learned: payable, msg.value, & currency conversion. 🔗 Blog: dev.to/sauravkumar817… #Solidity #Web3 #Crypto
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💰 Day 8 — Building a Multi-Currency Digital Tip Jar 🌍
Welcome to Day 8 of my #30DaysOfSolidity challenge! Today’s build: a Multi-Currency Digital Tip Jar...
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