Learn Solidity Blockchain: Build, Test & Deploy Secure ETH

Build, Test & Deploy a Password-Protected ETH Escrow DApp Using Solidity & Foundry (Beginner to Advanced)

What you’ll learn
Write Solidity smart contracts from scratch
Understand Ethereum smart contract structure and execution
Send and receive ETH using payable functions
Secure sensitive data using keccak256 hashing
Implement time-based logic with block.timestamp
Build a password-protected ETH escrow smart contract
Deploy smart contracts to Ethereum testnets using Remix and Foundry
Write professional tests and deployment scripts using Foundry

Requirements
Basic programming knowledge is helpful but not required
No prior blockchain or Solidity experience needed
A computer with internet access
Willingness to learn smart contract development

Description
This course provides a complete and practical introduction to Solidity and Ethereum smart contract development. It is designed to take you from the fundamentals of Solidity to building, testing, and deploying a real-world smart contract project.You will learn all the core concepts required to write production-ready smart contracts, including contract structure, functions, payable logic, hashing, time-based conditions, events, modifiers, and essential security best practices. The course also introduces a professional development workflow using Foundry, where you will write deployment scripts and full test cases.Throughout the course, you will build a complete project called SecretPay — a password-protected ETH escrow DApp. In this project, users can lock ETH behind a secret phrase. Only the correct password can unlock the funds, and if the deadline passes, the sender can safely refund their ETH. All logic is handled on-chain using a Solidity smart contract deployed to an Ethereum testnet.The course follows a clear step-by-step structure, starting with writing your first Solidity contract, deploying it, expanding to more complex contracts, and finally building, testing, and deploying the full SecretPay system. Every concept is explained in context while implementing real functionality.This course is suitable for complete beginners as well as developers who want to move into Web3 and smart contract development by building a portfolio-ready Ethereum project.Course OverviewIn this course, you will:Write Solidity smart contracts from scratchUnderstand contract structure, functions, and modifiersWork with payable functions and ETH transfersSecure sensitive data using keccak256 hashingImplement time-based logic using block.timestampUse structs and mappings to manage on-chain dataEmit events for frontend and external integrationsApply smart contract security best practicesDeploy contracts using Remix and Ethereum testnetsUse Foundry for deployment scripting and professional testingProject You Will BuildYou will build a password-protected ETH escrow smart contract where:Senders create ETH transfers locked behind a secret passwordRecipients must provide the correct secret to claim the fundsIf the deadline expires, the sender can refund the ETHThe entire system runs on a Solidity smart contract deployed to Ethereum

Who this course is for
Beginners who want to learn Solidity and blockchain development
Developers moving from Web2 to Web3
Students who want to build real-world Ethereum projects
Anyone interested in smart contract development and decentralized applications