Ethereum Core Architecture Masterclass – Based on the Latest Revised Edition of Mastering Ethereum

Ethereum Master Course

The Complete Starting Point for Practical Web3 Development & On-chain Understanding

This course is not just about how to build DApps or smart contract syntax.
It is a rare full-stack Web3 master course in Korea, designed to help you understand the entire Ethereum ecosystem as a 'whole'.

Through this course, you will

• Completely understand how Ethereum works internally,

• You will gain the ability to create, deploy, and test smart contracts, and even implement DApps.

Many courses
✔ Only explain blockchain principles
✔ Just make you copy code,
✔ Don't properly show real-world environments, but,

This course is completely different.

It's not just a simple practice exercise.

"Understanding → Practice → Extension" - A 3-stage structure that transforms the entirety of Ethereum into tangible knowledge.

• Understanding: Explains all components of Ethereum—EVM, transactions, gas, wallets, tokens, oracles, and more—within the "complete context."

• Hands-on: Deploy using Remix and Truffle in a Windows environment, and execute real transactions on the testnet.

• Expansion: Contains all the core competencies needed to grow as a Web3 developer, including DApp architecture, security, tokens, oracles, and consensus protocols.

When you finish this course,
you won't be someone who "partially knows" Ethereum,
but rather someone who can understand and implement the Ethereum ecosystem from start to finish.

Lesson 1. What is Ethereum

• The Philosophy and Purpose of Blockchain

• The Structural Differences Between Bitcoin and Ethereum

• The Emergence of the Smart Contract Era

• Understanding the 'Trust-Minimized Structure' that Web3 Aims For

• Why did Ethereum become the standard for Web3?

Lecture 2. Ethereum Basics

• # Account Structure: EOA vs Contract

• The relationship between state, blocks, and transactions

• Storage/Memory/Calldata

• Ethereum Network Structure (Mainnet, Testnet, Nodes)

• Preparing for Ethereum Development on Windows

Lecture 3. Ethereum Client

• The role of clients such as geth and Nethermind

• P2P Network, Consensus, Block Synchronization

• Light Client vs Full Node

• Why Developers Need to Understand 'Clients'

Lecture 4. Cryptography

• Fundamentals of Mathematics in Blockchain

• Hash Function (SHA-3), Public Key/Private Key Structure

• Signature, Key Generation, and Transaction Verification Principles

• Why Cryptography is the Pillar of Ethereum Security

Lesson 5. Wallet

• Types of Wallets: Software / Hardware / HD Wallet

• Windows-based MetaMask Installation and Practical Use

• # Mnemonic Structure and Account Derivation Principles

• All wallet operations (signing, nonce, gas, etc.)

Lecture 6. Transactions

• Complete Anatomy of Transaction Structure

• nonce, gasLimit, gasPrice, Fee Calculation

• Understanding Internal Transactions and Event Logs

• # Sending Real Transactions in Remix Practice

Lecture 7. Smart Contracts and Solidity

• Solidity Complete Basic Syntax

• variables, functions, structs, mappings, events

• Writing Your First Solidity Code in Remix

• # Compiling/Deploying in Windows + Truffle Environment

• # Complete Understanding of ABI Structure

Lecture 8. Smart Contracts and Vyper

• Vyper Language Characteristics and Philosophy

• Python Developer-Friendly Web3 Language

• Comparing the Same Functionality in Solidity vs Vyper

• When should you use Vyper?

Lecture 9. Smart Contract Security

• Reentrancy Attack Principle

• # Overflow, Access Control Issues

• # Risks of Using tx.origin 199972

• Safe Coding Practices Based on Real Hacking Cases

• # Remix + Truffle Test Security Check Practice

Lecture 10. Tokens

• Understanding the ERC-20 Token Standard

• Transfer, Approval, Allowance

• Creating Your Own ERC-20 Token

• # Deploying to Sepolia Testnet Practice

• # Writing Truffle Deployment Scripts for Windows

Lecture 11. Oracle

• The structure of how blockchain retrieves data from the external world

• Chainlink Basic Concepts

• # Understanding Price Feed, VRF, and Keeper

• Oracle's Security Risks

• Practice: Integrating Chainlink Price Feed in Remix

Lecture 12. DApp (Decentralized Application)

• DApp Structure: UI → Wallet → Contract

• Web3.js vs Ethers.js

• Setting Up a React Environment on Windows

• # Creating a MetaMask Integration UI

• Practice: Connecting and Operating Smart Contracts with React

Lecture 13. EVM (Ethereum Virtual Machine)

• Complete Dissection of the EVM Execution Model

• # Opcode, Gas Usage Structure

• # SLOAD/SSTORE Cost Analysis

• Mastering Ethereum Core Chapters Practical Summary

• Gas Optimization Techniques

Lecture 14. Consensus Protocol

• PoW → PoS Transition Background

• Validator Structure and Slashing Mechanism

• # L1 / L2 Scalability Structure Comparison

• From Block Creation Flow to Finality

• # Understanding Consensus Knowledge Required for Web3 Developers

The person who created this course

Coincraft

• Samsung Research Researcher

• Master's Degree in Cryptography/Security Systems

• Web3 On-Chain Analysis Expert

• COINCRAFT Academy Representative

• "Survival Strategies for Web3" Author

  
  

• Blockchain/Smart Contract Instructor

"This course is not just a technical lecture,
but aims to provide the most practical Ethereum learning experience in Korea."

❓ Do you have any questions?

Q1. I'm a complete beginner - can I follow along?

A. Yes, it is possible. The course is designed for Web3 beginners, and the hands-on exercises are guided step-by-step in a friendly manner.

Q2. Can non-developers understand it too?

A. Yes, it's possible. Since it's explanation-focused, you can follow along right away once you understand the logic.

Q3. I'm having trouble setting up the practice environment. Can you help me with that?

A. All environment setup processes are provided in video format, and every point where errors might occur is fully explained.

Notes Before Taking the Course

Development Tools

• Node.js (LTS version)

• VS Code

• Remix IDE (Web-based)

• Truffle Suite

• MetaMask (Windows Browser)

• Sepolia/Holesky Testnet

Why Windows?

• The majority of domestic developers and beginners use Windows

• You can complete all exercises without a virtual machine

• Truffle and Remix both work the same way on Windows

• Linux/Mac users can follow along with the same universal configuration

# Learning Materials

• Providing source code through GitHub

  
  

• PDF Summary Notes Provided

🔥 Now there's only one mission

This course is the fastest and most reliable path to becoming a Web3 developer.
Start now.