인프런 - 라이프타임 커리어 플랫폼

Blockchain, coins, and NFTs—they're interesting, but the terminology can be so difficult to understand! We'll guide you through the basic concepts of blockchain, which is already becoming a part of our daily lives, one by one :)

Blockchain and fintech technologies need to be understood and accepted as essential technologies for companies to advance further in the era of the 4th industrial revolution. Let’s understand the concept of blockchain and the changing financial business model and become a company that leads blockchain and fintech related businesses!

You can understand the core aspects of the entire crypto market and gain a better understanding of basic strategies for investing in altcoins. It helps you identify which areas to study in the investment and industrial sectors through the sectors that will be in the spotlight in the market after 2026.

This content explains use cases in various fields and discusses application methods, all based on an understanding of blockchain technology. It broadly covers everything from the basic concepts of blockchain to its use cases, aiming to provide a comprehensive understanding of blockchain and business insights.

In this lecture, you will learn how to issue NFTs on the Klaytn network. In addition, you will learn how to build a dApp using React+TypeScript.

Going a step further from the previous content of "Broad and Shallow Knowledge for Blockchain Games," this session specifically covers NFT and NFT games. Through cases of recently launched NFT games, we introduce trends in technology application, economic systems, and strategies for effectively developing NFT games.

A course that allows non-majors, newbies, and planners to create blockchain dApps even if they have never coded before.

Learn about blockchain by developing Ethereum-based DAPPs. You can also learn about practical development through the implementation of Smart Contracts.

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."

This course is a hands-on practical session where you will build your own NFT marketplace using Solidity smart contracts, frontend technologies, and web3.js. Students will implement all marketplace features—from NFT minting to selling, buying, and deleting—and deploy them directly to the latest testnets: Ethereum Sepolia, Polygon Amoy, and Kaia Kairos. Additionally, you will learn how to use IPFS for the decentralized storage of NFT images and metadata, allowing you to experience a production-ready DApp architecture that goes beyond a simple demo. ✨ Key Features of This Course Full-Stack Learning: Covers React UI, smart contract writing, and multi-chain deployment all at once. Up-to-Date Environment: Supports Sepolia, Amoy, and Kairos testnets with MetaMask integration. Master the Core NFT Process: Image upload (IPFS) → Metadata creation → Minting → Marketplace trading. Practical & Hands-on: Gain real-world service development experience, including transaction handling, UX design, and multi-chain support.

This is a blockchain Web3 development project course. It is recommended that you take the basics and learn through Part 1 of the series.

Sui is a layer 1 network that is friendly to both users and developers. It aims for wide usability through fast speed and low transaction costs. As an official education partner of Sui, Weldon Studio will guide you through the specific process of development and use through the network.

You will learn how to create basic NFTs, buy and sell NFTs using React and Solidity (ERC721). You will learn how to write smart contracts and how to connect smart contracts written using React to the web.

Reading the Standard of Digital Money — A New Financial Order Opened by Stablecoins In the uncertain digital asset market, stablecoins—the only assets that function "like real money"—have already emerged as a core part of the global financial infrastructure. This provides essential, condensed knowledge for professionals who want to be at the forefront of understanding the paradigm shift in the digital economy.

This course is a complete beginner's introduction prepared for those new to Web3. It explains in an easy and intuitive way why blockchain is important, how wallets, addresses, and transactions work, and the concepts we must know in the Web3 era. Through this course, students will: Understand the Web1 → Web2 → Web3 evolution Learn the core structure of blockchain (wallets, addresses, keys, transactions) Grasp the meaning of decentralization and the changes Web3 will bring Practice basics like creating and sending with actual wallets Naturally acquire these skills and establish a first foothold into the Web3 world. Designed to be accessible even without a technical background, this course is structured around easy and practical examples by an active on-chain analyst. If Web3 felt unfamiliar and difficult, experience the most friendly first step in this course.

This course uses the Klaytn blockchain, created by Ground X, a subsidiary of Kakao. It covers the content required to create decentralized apps with Klaytn and introduces Klaytn's development ecosystem, including how to use the blockchain SDK (e.g., caver-js) provided by Klaytn.

This is a lecture that covers quite in-depth content. We will implement the very famous market, eBay. However, it is a completely decentralized version based on Ethereum and IPFS! This is a lecture that will walk you through the entire process of making the market run on Ethereum by writing all the core logic in Solidity.

You will gain experience deploying to the Ropsten testnet and learn how to write more mature smart contracts in Solidity using the Truffle framework.

Developing decentralized applications (Dapps) on the Ethereum blockchain using the Solidity language and the Truffle build framework.

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.