⛓️ Karya Chain

Blockchain-Powered Copyright Protection for Indonesia's Creative Economy

Tamper-proof IP registration • Automated lifetime royalties • OJK-compliant marketplace

Built for OJK-Ekraf Infinity Hackathon 2025 🏆

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🎯 The Problem

Only 11% of Indonesian creators have IP protection in a $12.36B creative export industry, leading to:

• Widespread piracy and content theft
• Lost royalties for original creators
• No transparent proof of ownership
• Manual, inefficient royalty distribution

💡 Our Solution

Karya Chain provides blockchain-verified copyright registration with automated, perpetual royalty distribution for Indonesia's 27.66M creative workers.

Key Features

🔒 Immutable Copyright Registry - Blockchain proof of ownership with IPFS metadata 💰 Automated Royalties - Smart contract-enforced payments on every resale (ERC-2981) 🎨 Multi-Asset Support - Art, Music, Writing, Photography, Design 🛒 Creator Marketplace - Direct sales with 2.5% platform fee ⚖️ OJK-Compliant - First regulatory-aligned IP platform in Indonesia

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🏗️ Architecture

Next.js 14 + TypeScript + Tailwind CSS
          ↓
    wagmi v2 + RainbowKit (Web3)
          ↓
    Pinata IPFS (Metadata Storage)
          ↓
┌─────────────────────────────────────────┐
│   Smart Contracts (Sepolia Testnet)    │
├─────────────────────────────────────────┤
│ • CopyrightRegistry - IP registration   │
│ • KaryaNFT - ERC-721 + ERC-2981         │
│ • KaryaMarketplace - Trading platform   │
└─────────────────────────────────────────┘

📚 Full Architecture Docs

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📊 Project Stats

Metric	Value
Smart Contract Tests	90 tests, 100% coverage
Security Audit	✅ Slither passed (0 critical)
Gas Efficiency	~412k registration, ~275k mint
Frontend Pages	9 pages, fully responsive
Blockchain Integration	100% (5 custom wagmi hooks)
Production Status	✅ Deployed & Verified

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🚀 Quick Start

# Clone and install
git clone https://github.com/RECTOR-LABS/ojk-ekraf-hackathon.git
cd ojk-ekraf-hackathon
npm install

# Run tests (90 tests, 100% coverage)
npm test

# Deploy contracts
cp .env.example .env  # Add your PRIVATE_KEY and ETHERSCAN_API_KEY
npm run deploy:sepolia

# Start frontend
cd frontend-design-2
npm install
npm run dev  # Opens at localhost:3001

Live Demo: karyachain.rectorspace.com

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📁 Project Structure

ojk-ekraf-hackathon/
├── contracts/                   # Smart contracts (Solidity 0.8.20)
│   ├── CopyrightRegistry.sol   # 19 tests, 100% coverage
│   ├── KaryaNFT.sol            # 32 tests, 100% coverage
│   └── KaryaMarketplace.sol    # 39 tests, 100% coverage
├── frontend-design-2/           # Production DApp (Next.js 14)
│   ├── src/hooks/              # 5 custom wagmi hooks (~1000 lines)
│   └── src/app/                # 9 pages, glassmorphism UI
├── test/                        # 90 comprehensive tests
├── docs/                        # Complete documentation
│   ├── PRD.md                  # Product requirements
│   ├── ARCHITECTURE.md         # Technical design
│   ├── SECURITY-AUDIT.md       # Security analysis
│   └── CONTRACT-API.md         # Smart contract API
└── pitch-deck/                  # Hackathon submission materials

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🔗 Deployed Contracts (Sepolia Testnet)

Contract	Address	Status
CopyrightRegistry	0xa2e84f3c...9ca93f	✅ Verified
KaryaNFT	0xE7f3c9Bd...2b52Fa4	✅ Verified
KaryaMarketplace	0xb2430198...b4b8Ed10	✅ Verified

Deployment Date: October 13, 2025 Network: Sepolia (Chain ID: 11155111)

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🔒 Security & Compliance

✅ ReentrancyGuard on all value transfers ✅ OpenZeppelin audited contract libraries ✅ Slither audit passed (0 critical/high issues) ✅ 100% test coverage across all contracts ✅ Input validation on external functions ✅ OJK-compliant architecture

📄 Full Security Audit Report

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💼 Market Impact

Metric	Value
Indonesia Creative Economy	$12.36B in exports
Target Users	27.66M creative workers
Current IP Protection Rate	Only 11%
Annual Growth Rate	5.96% exports, 8.08% investment

Problem Solved: First OJK-compliant blockchain platform addressing IP protection crisis and enabling automated royalty distribution for Indonesian creators.

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🏆 OJK-Ekraf Infinity Hackathon 2025

Theme: Accelerating Creative Economy Through Digital Innovation Prize Pool: IDR 50,000,000 | Deadline: October 22, 2025

Judging Criteria (Target: 95/100)

• 🎯 Innovation & Originality: 30%
• 🔐 Security & Compliance: 25% ⭐
• ⚡ Implementation Feasibility: 20%
• 💻 Technical Quality: 15%
• 🎤 Presentation: 10%

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🛠️ Technology Stack

Blockchain: Solidity 0.8.20, Hardhat, OpenZeppelin, ERC-721/2981 Frontend: Next.js 14, TypeScript, Tailwind CSS, Framer Motion Web3: wagmi v2, viem, RainbowKit Storage: Pinata IPFS Network: Sepolia Testnet (Chain ID: 11155111)

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📚 Documentation

• 📋 Product Requirements (PRD)
• 🏗️ Technical Architecture
• 🔒 Security Audit Report
• 📖 Smart Contract API
• 📊 Pitch Deck

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👥 Team

RECTOR - Full-Stack Blockchain Developer

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📄 License

ISC License

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Built for Indonesia's Creative Economy 🇮🇩

Live Demo • Documentation • Pitch Deck

Powered by OpenZeppelin • Ethereum Foundation • Pinata IPFS