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๐Ÿ”— Chainee | Web3 Collaboration Platform

Chainee Main Screen

"์‹ ๋ขฐ๋ฅผ ์ฆ๋ช…ํ•˜๋Š” ์ตœ์†Œํ•œ์˜ ๋ ˆ์ด์–ด, Web3 ํ˜‘์—…์˜ ๊ธฐ์ค€"

Chainee๋Š” DID ๊ธฐ๋ฐ˜ ์‹ ์› ์ธ์ฆ๊ณผ ์Šค๋งˆํŠธ ๊ณ„์•ฝ ์—์Šคํฌ๋กœ๋ฅผ ๊ฒฐํ•ฉํ•˜์—ฌ
ํ˜‘์—… ์ „ ๊ณผ์ •์„ ๊ฒ€์ฆ ๊ฐ€๋Šฅํ•œ ๋ฐ์ดํ„ฐ๋กœ ์—ฐ๊ฒฐํ•˜๋Š” ์‹ ๋ขฐ ๊ธฐ๋ฐ˜ ์ธ์žฌ ๋งค์นญ ํ”Œ๋žซํผ์ž…๋‹ˆ๋‹ค.


๐Ÿ“– ๋ชฉ์ฐจ | Table of Contents


๐Ÿ“Œ ํ”„๋กœ์ ํŠธ ์†Œ๊ฐœ | Introduction

Background

๊ธฐ์กด Web2 ์™ธ์ฃผ ํ”Œ๋žซํผ์€ ์‹ ์› ๋ถˆํ™•์‹ค์„ฑ, ๊ณ„์•ฝ ์กฐ๊ฑด ๋ถ„์Ÿ, ๋Œ€๊ธˆ ์ง€๊ธ‰ ์ง€์—ฐ์ด๋ผ๋Š” ๊ณ ์งˆ์ ์ธ ๋ฌธ์ œ๋ฅผ ์•ˆ๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. Chainee๋Š” ๋ธ”๋ก์ฒด์ธ์„ ๋‹จ์ˆœํ•œ ์ €์žฅ์†Œ๊ฐ€ ์•„๋‹Œ **'์‹ ๋ขฐ ์ฆ๋ช… ๋ ˆ์ด์–ด'**๋กœ ํ™œ์šฉํ•˜์—ฌ ์ด ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•ฉ๋‹ˆ๋‹ค.

Strategy

  • Hybrid Architecture: ์ธ์ฆยท์ƒํƒœ ๊ด€๋ฆฌ ๋“ฑ UX๊ฐ€ ์ค‘์š”ํ•œ ์˜์—ญ์€ **Web2(Spring)**๊ฐ€, ์‹ ์› ์ฆ๋ช…๊ณผ ๋Œ€๊ธˆ ๋ณด์กด์€ **Web3(Rust/Blockchain)**๊ฐ€ ๋‹ด๋‹นํ•ฉ๋‹ˆ๋‹ค.
  • Minimal Web3 Layer: ๋ชจ๋“  ๋ฐ์ดํ„ฐ๋ฅผ ๋ธ”๋ก์ฒด์ธ์— ์˜ฌ๋ฆฌ๋Š” ๋น„ํšจ์œจ์„ ์ œ๊ฑฐํ•˜๊ณ , ์‹ ๋ขฐ๊ฐ€ ํ•„์š”ํ•œ ํ•ต์‹ฌ ์ ‘์ (์ธ์ฆ, ์—์Šคํฌ๋กœ, ์„ฑ๊ณผ ๊ธฐ๋ก)์—๋งŒ ์˜จ์ฒด์ธ ๊ธฐ์ˆ ์„ ์ ์šฉํ–ˆ์Šต๋‹ˆ๋‹ค.
  • Gradual Trust: Google OAuth๋กœ ์‹œ์ž‘ํ•ด KYC, DID ๋ฐœ๊ธ‰์œผ๋กœ ์ด์–ด์ง€๋Š” ๋‹จ๊ณ„์  ๊ฒ€์ฆ ์‹œ์Šคํ…œ์„ ๊ตฌ์ถ•ํ–ˆ์Šต๋‹ˆ๋‹ค.

๐Ÿงฉ ์‹œ์Šคํ…œ ์•„ํ‚คํ…์ฒ˜ | System Architecture

Client (Web)
   โ”‚
   โ–ผ
[ Backend API (Spring Boot) ] โ—€โ”€โ”€โ”€โ–ถ [ DID Module (Rust) ]
   โ”‚                                   โ”œโ”€ DID Issuer
   โ”œโ”€ Auth: Google OAuth2              โ””โ”€ DID Verifier
   โ”œโ”€ KYC & Contract Manager
   โ””โ”€ Notification Service
   โ”‚
   โ–ผ                                [ Blockchain Layer ]
[ Database (MySQL) ]                   โ”œโ”€ DID Document
   โ””โ”€ User/Contract Data               โ”œโ”€ Escrow Smart Contract
                                       โ””โ”€ Badge NFT (Result)

โœจ ์ฃผ์š” ๊ธฐ๋Šฅ | Key Features

1๏ธโƒฃ ๋‹จ๊ณ„์  ์‹ ๋ขฐ ํŒŒ์ดํ”„๋ผ์ธ (Verification)

  • OAuth โ†’ KYC โ†’ DID: ๋‹จ์ˆœ ์†Œ์…œ ๋กœ๊ทธ์ธ์„ ๋„˜์–ด ์‹ค์ œ ์‹ ์› ํ™•์ธ(KYC)์ด ์™„๋ฃŒ๋œ ์‚ฌ์šฉ์ž์—๊ฒŒ๋งŒ DID๋ฅผ ๋ฐœ๊ธ‰ํ•ฉ๋‹ˆ๋‹ค.
  • ์ ‘๊ทผ ์ œ์–ด: DID ๋ฏธ๋ฐœ๊ธ‰ ์‚ฌ์šฉ์ž๋Š” ๊ณ„์•ฝ ์ฒด๊ฒฐ ๋‹จ๊ณ„์— ์ง„์ž…ํ•  ์ˆ˜ ์—†๋„๋ก ์›์ฒœ ์ฐจ๋‹จํ•˜์—ฌ ํ”Œ๋žซํผ ๋‚ด ์‹ ๋ขฐ๋„๋ฅผ ์œ ์ง€ํ•ฉ๋‹ˆ๋‹ค.

2๏ธโƒฃ ์Šค๋งˆํŠธ ๊ณ„์•ฝ ๊ธฐ๋ฐ˜ ์—์Šคํฌ๋กœ (Escrow)

  • ๋Œ€๊ธˆ ๋ณดํ˜ธ: ๊ณ„์•ฝ ์ƒ์„ฑ๊ณผ ๋™์‹œ์— ๋ณด์ˆ˜๊ฐ€ ์—์Šคํฌ๋กœ ์ปจํŠธ๋ž™ํŠธ์— ์˜ˆ์น˜๋ฉ๋‹ˆ๋‹ค.
  • ์ •์‚ฐ ์ž๋™ํ™”: ํ˜‘์—… ๊ฒฐ๊ณผ ๊ฒ€์ฆ ์‹œ ๋Œ€๊ธˆ์ด ์ฆ‰์‹œ ์ง€๊ธ‰๋˜๋ฉฐ, ๊ณ„์•ฝ ์‹คํŒจ๋‚˜ ๋งŒ๋ฃŒ ์‹œ ์‚ฌ์ „์— ์ •์˜๋œ ๊ทœ์น™์— ๋”ฐ๋ผ ์ž๋™ ํ™˜๋ถˆ ๋กœ์ง์ด ์ž‘๋™ํ•ฉ๋‹ˆ๋‹ค.

3๏ธโƒฃ ์„ฑ๊ณผ ๊ธฐ๋ฐ˜ NFT ๋ฐฐ์ง€ (Identity)

  • ๊ฒ€์ฆ ๊ฐ€๋Šฅํ•œ ์ด๋ ฅ: ํ˜‘์—… ์ข…๋ฃŒ ํ›„ ์ง€๊ธ‰๋ฅ  ๋ฐ ์„ฑ๊ณผ์— ๋”ฐ๋ผ 4๊ฐœ ๋“ฑ๊ธ‰(Platinum ~ Bronze)์˜ NFT๋ฅผ ๋ฐœ๊ธ‰ํ•ฉ๋‹ˆ๋‹ค.
  • ์˜จ์ฒด์ธ ํฌํŠธํด๋ฆฌ์˜ค: ๋‹จ์ˆœ ํ…์ŠคํŠธ ์ด๋ ฅ์ด ์•„๋‹Œ, ๋ธ”๋ก์ฒด์ธ์ƒ์— ์˜๊ตฌ ๊ธฐ๋ก๋˜๋Š” ์‹ ๋ขฐ ์ž์‚ฐ์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ” ํ•ต์‹ฌ ๋กœ์ง | Core Logic

DID ์ธ์ฆ ํ๋ฆ„

  • Register (Issuer): ์‚ฌ์šฉ์ž DID ์ƒ์„ฑ ๋ฐ ์˜จ์ฒด์ธ DID Document ์ €์žฅ. KYC ์ •๋ณด๋ฅผ ํฌํ•จํ•œ ๋ฐœ๊ธ‰์ž(Issuer) ์„œ๋ช… VC(Verifiable Credential) ์ƒ์„ฑ.
  • Login (Verifier): ์„œ๋ฒ„์˜ Challenge(nonce)์— ๋Œ€ํ•ด ์‚ฌ์šฉ์ž๊ฐ€ VC์™€ VP๋ฅผ ์ œ์ถœํ•˜๋ฉด ์„œ๋ช… ๋ฐ ์œ ํšจ์„ฑ์„ ์ฆ‰๊ฐ ๊ฒ€์ฆํ•ฉ๋‹ˆ๋‹ค.

์Šค๋งˆํŠธ ๊ณ„์•ฝ ยท Escrow ๊ตฌ์กฐ

  • Escrow: ๊ณ„์•ฝ ๋ณด์ˆ˜๋ฅผ ์•ˆ์ „ํ•˜๊ฒŒ ์˜ˆ์น˜ํ•˜๋ฉฐ, ์„ฑ๊ณต ์‹œ 5%, ์‹คํŒจ/๋งŒ๋ฃŒ ์‹œ 1%์˜ ์ฐจ๋“ฑ ์ˆ˜์ˆ˜๋ฃŒ ์ฒด๊ณ„๋ฅผ ์ ์šฉํ•ฉ๋‹ˆ๋‹ค.
  • Off-chain ์—ฐ๋™: Solana ํŠน์„ฑ์ƒ ์ž๋™ ์‹คํ–‰์ด ๋ถˆ๊ฐ€๋Šฅํ•œ ๋งŒ๋ฃŒ ๋กœ์ง์€ ๋ฐฑ์—”๋“œ ์„œ๋ฒ„์—์„œ ์ƒํƒœ๋ฅผ ๋ชจ๋‹ˆํ„ฐ๋งํ•˜์—ฌ ํŠธ๋žœ์žญ์…˜์„ ์ „์†กํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ๋ณด์™„ํ–ˆ์Šต๋‹ˆ๋‹ค.

๐Ÿ›  ๊ธฐ์ˆ  ์Šคํƒ | Tech Stack

Category Stack
Backend Java 17, Spring Boot 3.x, Rust (DID Core), JPA
Web3 DID, Smart Contract (Escrow), NFT (Badge)
Database MySQL 8.0
Infrastructure AWS EC2, GitHub Actions
Tools GitHub, Notion, Figma

๐Ÿ“– ๋ ˆํฌ์ง€ํ† ๋ฆฌ | Repositories

Part Repository Link
Backend ๐Ÿ”— GitHub Link
Blockchain ๐Ÿ”— GitHub Link

๐Ÿ‘ฅ ํ”„๋กœ์ ํŠธ ํŒ€ | Project Team

  • ๊น€์—ฌ์€ (Backend Engineer)
    • ํ”„๋กœ์ ํŠธ ์ „๋ฐ˜์˜ ๋„๋ฉ”์ธ ์„ค๊ณ„ ๋ฐ API ์•„ํ‚คํ…์ฒ˜ ๊ตฌ์ถ•
    • ์Šค๋งˆํŠธ ๊ณ„์•ฝ(Escrow) ์ƒํƒœ ์ „์ด ๋ฐ ๋ฐฑ์—”๋“œ ์—ฐ๋™ ๋กœ์ง ์„ค๊ณ„
  • ์ดํƒœ๊ฒฝ (Web3 Engineer)
    • Rust ๊ธฐ๋ฐ˜ DID Issuer/Verifier ๋ชจ๋“ˆ ๊ตฌํ˜„
    • ์Šค๋งˆํŠธ ๊ณ„์•ฝ(Escrow, Badge NFT) ๊ฐœ๋ฐœ ๋ฐ ๋ฐฐํฌ
    • ์˜จ์ฒด์ธ ๋ฐ์ดํ„ฐ ๋ฌด๊ฒฐ์„ฑ ๊ฒ€์ฆ ๋ฐ ํŠธ๋žœ์žญ์…˜ ์ตœ์ ํ™”
  • ๋ฐ•์†”๋นˆ (Frontend Engineer)
    • React ๊ธฐ๋ฐ˜ ํด๋ผ์ด์–ธํŠธ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ UI/UX ๊ตฌํ˜„
    • Web3 ์ง€๊ฐ‘ ์—ฐ๋™ ๋ฐ ์‹ค์‹œ๊ฐ„ ๊ณ„์•ฝ ์ƒํƒœ ์‹œ๊ฐํ™”

๐ŸŽ“ Note

๋ณธ ํ”„๋กœ์ ํŠธ๋Š” ํ™์ต๋Œ€ํ•™๊ต ์กธ์—…ํ”„๋กœ์ ํŠธ๋กœ ์ง„ํ–‰๋˜์—ˆ์Šต๋‹ˆ๋‹ค.
Web3 ๊ธฐ์ˆ ์„ ์‹ค์ œ ์„œ๋น„์Šค์— ์ ์šฉ ๊ฐ€๋Šฅํ•œ ํ•˜์ด๋ธŒ๋ฆฌ๋“œ ์‹ ๋ขฐ ๊ตฌ์กฐ ์„ค๊ณ„์— ์ค‘์ ์„ ๋‘์—ˆ์Šต๋‹ˆ๋‹ค.

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