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GoodCommit - The Habit Garden 🌱

Stake on yourself. Build real-world healthy habits. Grow your digital garden. Earn rewards.

A Web3 self-improvement platform that transforms GoodDollar (G$) into a powerful accountability engine. Users stake G$ tokens on their commitment to daily habits—workouts, study sessions, or personal goals. Success means rewards and a flourishing digital plant. Failure means your stake funds the global UBI pool, helping others while you restart your journey.

🎯 What We're Building

GoodCommit is a full-stack decentralized application that gamifies habit formation through financial commitment and visual growth metaphors. We're creating a system where:

  • Your habits become investments - Stake G$ tokens on your commitment to daily activities
  • Your progress is visible - Watch your digital plant grow from seed to fruiting tree as you build streaks
  • Your failures help others - Missed commitments redirect your stake to GoodDollar's UBI pool
  • Your success is rewarded - Consistent effort earns you points convertible back to G$ with bonuses

The Core Concept: Habit Plants

Every habit you commit to becomes a living plant in your digital garden:

  1. Plant a Seed - Stake G$ tokens and set your commitment duration
  2. Daily Care - Complete verified activities (workouts, quizzes) to earn points
  3. Watch It Grow - Your plant evolves through 5 stages: Seed → Sprout → Growing → Mature → Fruiting
  4. Harvest Rewards - Convert accumulated points to G$ tokens, or stake them for bonus multipliers
  5. Avoid Withering - Miss days and watch your plant decay (40% daily point loss)

🏗️ Three-Layer Architecture

1. Smart Contracts (Celo Blockchain)

File: contracts/contracts/GoodCommitStaking.sol

A sophisticated staking system with:

  • Point-Based Rewards: Earn points for verified activities, convert to G$ at 10 points = 1 G$
  • Decay Mechanism: 40% daily point decay for inactivity, creating urgency and accountability
  • Flexible Harvesting: Three options when your plant bears fruit:
    • Claim all points → Convert to G$ and restart
    • Stake partial + claim rest → 5% bonus on staked portion
    • Stake all points → 10% bonus for maximum commitment
  • Slashing System: Failed commitments split 60% to UBI pool, 40% to reward treasury
  • Dual Habit Types: Separate tracking for Health (workouts) and Academics (quizzes)
  • Plant Growth Stages: Visual progression tied to point thresholds
  • Comprehensive Testing: 75+ test cases

Key Features:

  • One-time seed claim (10 G$ to get started)
  • Verifier-based activity recording (backend validates, contract records)
  • Decay reward pool (redistributes lost points to active users)
  • Emergency pause functionality
  • Full OpenZeppelin v5 security standards

2. Backend API (Node.js + Express)

File: backend/server.js

Verification and validation layer:

  • Workout Validation: GPS tracking, speed verification, duration checks
  • Quiz Generation: AI-powered quiz creation from uploaded PDFs
  • Quiz Validation: Answer checking, tab-switching detection, time limits
  • Face Verification: Integration with GoodDollar's Sybil-resistance system
  • Inactive User Monitoring: Automated detection and slashing triggers
  • Smart Contract Integration: Secure communication with on-chain logic

Security Measures:

  • GPS spoofing detection (speed limits, location consistency)
  • Camera verification for gym workouts
  • Quiz integrity checks (no tab switching, timed sessions)
  • Rate limiting and input validation

3. Frontend (Next.js 14 + React)

Files: frontend/src/app/

Beautiful, responsive user interface:

  • Wallet Integration: RainbowKit for seamless Celo wallet connection
  • Real-Time Balance: Live G$ token balance display
  • Theme System: Automatic light/dark mode based on device preferences
  • Two Habit Paths:
    • Health & Fitness: Track workouts with GPS, earn points for exercise
    • Academics (ExamEdge): Upload study materials, take AI quizzes, grow through learning
  • Plant Visualization: Animated growth stages with emoji representations
  • Activity History: Complete workout and quiz logs
  • Responsive Design: Beautiful gradients, smooth transitions, mobile-friendly

User Experience:

  • Face verification modal on first use
  • Intuitive staking interface with duration selectors
  • Real-time workout tracking with GPS simulation
  • PDF upload for quiz generation
  • Point accumulation visualization
  • Harvest options with clear bonus explanations

🎮 How It Works

For Health & Fitness Users

  1. Connect Wallet - Link your Celo wallet with RainbowKit
  • Remember to switch to the Celo network in your wallet. You can use MetaMask
  • You can add the Celo network to your wallet by clicking on the network dropdown and selecting "Add a custom Network".
Network Name: Celo Mainnet

RPC URL: https://forno.celo.org

Chain ID: 42220

Currency Symbol: CELO

Block Explorer: https://celoscan.io
  • now the Celo token network has been added to your wallet Token list
  1. Verify Identity - Complete GoodDollar Face Verification (one-time)
  2. Plant Your Seed - Stake G$ tokens, set commitment duration (days)
  3. Choose Exercise - Walking, running, gym workouts (squats, weights, cardio)
  4. Start Workout - In-app timer with GPS tracking for outdoor activities
  5. Earn Points - 1 point per second of verified activity
  6. Watch Growth - Your plant evolves as you build streaks
  7. Harvest - Convert points to G$ when your plant reaches fruiting stage

For Academic Users (ExamEdge)

  1. Upload Study Material - PDF documents (textbooks, notes, syllabi)
  2. AI Quiz Generation - Backend creates 10 questions from your content
  3. Take Timed Quiz - No tab-switching allowed, earn 10 points per correct answer
  4. Penalty System - All wrong answers = -3 points (accountability!)
  5. Plant Growth - Progress through stages: 10pts (Seed) → 100pts (Fruiting)
  6. Harvest Options - Claim, partial stake, or full stake with bonuses

The Decay System (Accountability Engine)

Miss a day? Your points decay:

  • Day 1 missed: Lose 40% of points (keep 60%)
  • Day 2 missed: Lose 40% of remaining (keep 36% of original)
  • Day 8 missed: Complete withering (all points lost)

Decayed points go to a reward pool, redistributed to active users. This creates:

  • Urgency: Can't procrastinate without consequences
  • Fairness: Inactive users don't hoard rewards
  • Community: Your failures help fund others' success

🚀 Getting Started

Prerequisites

  • Node.js 18+
  • Celo wallet (MetaMask, Valora)
  • CELO for gas fees
  • G$ tokens for staking

Installation

# Clone repository
git clone <https://github.com/CollinsC1O/GoodCommit.git>
cd GoodCommit

# Install all dependencies
npm install --prefix frontend
npm install --prefix backend
npm install --prefix contracts

Running the Application

# Terminal 1: Backend
cd backend
npm start

# Terminal 2: Frontend
cd frontend
npm run dev

# Visit http://localhost:3000

Deploying Contracts

cd contracts

# Compile
npm run compile

# Test (75+ tests)
npm test

# Deploy to Alfajores testnet
npm run deploy:alfajores

# Deploy to Celo mainnet
npm run deploy:celo

🔐 Security & Verification

GoodDollar Face Verification

  • Sybil Resistance: One person = one account
  • Privacy-First: Biometric data never stored
  • Seamless UX: Modal-based verification flow
  • Integration: @gooddollar/good-design SDK

Smart Contract Security

  • OpenZeppelin Standards: ReentrancyGuard, Pausable, Ownable
  • Access Control: Verifier role for activity recording
  • Emergency Functions: Pause/unpause, emergency withdraw
  • Tested: 75+ test cases covering edge cases

Backend Validation

  • GPS Verification: Speed limits, location consistency
  • Camera Proof: Selfie verification for gym workouts
  • Quiz Integrity: Tab-switching detection, time limits
  • Rate Limiting: Prevents spam and abuse

📊 Key Metrics & Impact

For Users

  • Accountability: Financial stake creates real commitment
  • Visualization: Plant growth provides satisfying progress feedback
  • Flexibility: Choose your own commitment duration and amount
  • Rewards: Earn up to 10% bonus for full commitment

For GoodDollar Ecosystem

  • G$ Velocity: Daily transactions from stake/harvest/slash cycles
  • UBI Contribution: 60% of failed stakes fund universal basic income
  • User Engagement: Gamification drives daily active usage
  • Network Effects: Success stories inspire more participants

Current Status

  • ✅ Smart contracts deployed and tested (85% test coverage)
  • ✅ Backend API with workout/quiz validation
  • ✅ Frontend with wallet integration and face verification
  • ✅ Theme system with automatic light/dark mode
  • 🔄 Testnet deployment in progress
  • 🔄 Mobile optimization ongoing

🗺️ Roadmap

Phase 1: Foundation (Complete)

  • ✅ Core smart contract with decay mechanism
  • ✅ Backend validation system
  • ✅ Frontend UI with wallet integration
  • ✅ Face verification integration
  • ✅ Comprehensive test suite

Phase 2: Enhancement (Current)

  • 🔄 Deploy to Alfajores testnet
  • 🔄 Mobile-responsive optimizations
  • 🔄 Advanced quiz AI (GPT integration)
  • 🔄 GPS tracking
  • 🔄 Social features (leaderboards, friend challenges)

Phase 3: Launch (Next 3 Months)

  • 📅 Security audit
  • 📅 Mainnet deployment
  • 📅 Marketing campaign
  • 📅 Community building
  • 📅 Partnership with fitness/education platforms and institutions

Phase 4: Scale

  • 📅 Additional habit categories (meditation, reading, coding)
  • 📅 NFT plant collections
  • 📅 Multiplayer gardens (family/team challenges)
  • 📅 Integration with wearables (Fitbit, Apple Watch, Oraimo Watch)

🤝 Contributing

We welcome contributions! Areas where you can help:

  • Smart Contracts: Gas optimization, additional features
  • Backend: New validation methods, AI improvements
  • Frontend: UI/UX enhancements, animations
  • Testing: More test coverage, edge case discovery
  • Documentation: Tutorials, guides, translations

🔗 Links & Resources

Address

  • GoodCommitStaking Contract-Address: 0x0C6A7E2D57ac78F63a1A8a7fC2CeE4840CD451BD

  • G$ Token: 0x62B8B11039FcfE5aB0C56E502b1C372A3d2a9c7A

📄 License

MIT License - See LICENSE file for details

🙏 Acknowledgments

Built for GoodBuilders Season 3 - Supporting the GoodDollar mission of universal basic income through innovative Web3 applications.

Special thanks to:

  • GoodDollar team for the Face Verification SDK
  • Celo Foundation for the robust blockchain infrastructure
  • OpenZeppelin for security-first smart contract libraries

Built with 💚 for the GoodDollar ecosystem

"The best time to plant a tree was 20 years ago. The second best time is now." Built with 💚 for the GoodDollar ecosystem