Have you ever clicked on an Etherscan link after seeing a post saying, "A whale has moved funds to an exchange"? You likely closed the window immediately after seeing a screen filled with nothing but incomprehensible strings of characters. This course covers how to read that screen. An instructor with 14 years of experience in the security field has packed 15 lessons on how to directly verify wallets, transactions, and tokens using only free tools, without a single line of code. Now, judge for yourself using original records instead of relying on what others say.

If you are planning or operating a WEB3 service but don't know "where accidents happen," you need this lecture. This course does not teach you about coins or development. Instead, it deconstructs the structure of recurring accidents in WEB3 and teaches you how to assess risks based on the boundaries of approval, signature, and authority. After taking this course, you will: ㆍBe able to read the structure of any DApp that comes your way ㆍBe able to assess risks using a checklist ㆍView WEB3 not just as a "technology," but as an "object of design."

“I have the data, but I don’t know how to look at it.” This is the most common concern for those starting on-chain analysis for the first time. In this course, a 10-year veteran data analyst and on-chain researcher fully reveals all the tools and interpretation techniques used in actual market analysis. ㆍWhich indicators react first before coin prices move ㆍWhether whales are accumulating or dumping ㆍHow to read market sentiment through bridge and stablecoin flows ㆍHow to extract data via Etherscan and Dune without programming ㆍAnd the interpretation patterns and strategies used by professional analysts This course is designed to help you go beyond "just looking" at on-chain data and build an analytical framework that leads to actual investment decisions.

For those who have only seen Ethereum's structure in fragments, I will organize everything from wallets and transactions to smart contracts and the EVM into a single, cohesive flow. You can follow along even without a technical background.

This course is a complete beginner's introductory program prepared for those who are new to Web3. It explains why blockchain is important, how wallets, addresses, and transactions work, and the concepts we must know in the Web3 era in an easy and intuitive way. Through this course, students will naturally learn: Understanding the flow of Web1 → Web2 → Web3 Core structures of blockchain (wallets, addresses, keys, transactions) The meaning of decentralization and the changes Web3 will create Basic hands-on practice such as creating and sending from an actual wallet By doing so, you will establish the first stepping stone to enter the world of Web3. Designed so that even those without a technical background can follow along, an active on-chain analyst has structured the course around simple and realistic examples. If Web3 felt difficult because it was unfamiliar, experience the most friendly first step in this course.