Durian is a crypto payment platform designed for businesses and tourists in Chiang Mai, Thailand. Accept USDC payments, verify with zkTLS, and settle in Thai Baht.

• Privy Authentication - Email login with auto-generated embedded wallets
• USDC Payments - Accept stablecoin payments on Base Sepolia
• Primus zkTLS Verification - Cryptographically verify DurianBank payment data
• Business Directory - Mapbox-powered discovery of crypto-friendly businesses
• Thai Baht Settlement - Offramp USDC to local bank accounts via PromptPay
• Beautiful UI - Premium design with dark mode support

• Framework: Next.js 15 (App Router)
• Auth & Wallets: Privy SDK
• Database: Supabase (PostgreSQL)
• Payment Verification: Primus Labs zkTLS
• Maps: Mapbox GL JS
• Styling: Tailwind CSS + shadcn/ui
• Blockchain: Base Sepolia (USDC)

npm install

Copy the example environment file and fill in your API keys:

cp .env.local.example .env.local

Required keys:

• Privy: Get from app.privy.io
• Supabase: Get from supabase.com
• Primus Labs: Get from developer.primuslabs.xyz
• Mapbox: Get from mapbox.com

1. Create a new Supabase project
2. Run the schema in supabase/schema.sql via the SQL Editor
3. Enable Row Level Security policies

npm run dev

Open http://localhost:3000

durian/
├── app/
│   ├── (marketing)/          # Landing, directory, legal
│   ├── (auth)/               # Login, profile
│   ├── (business)/           # Dashboard, onboarding
│   ├── (pay)/                # Payment screens
│   └── api/                  # API routes
├── components/
│   ├── ui/                   # shadcn/ui components
│   └── ...                   # Custom components
├── lib/                      # Utils, config, stores
├── types/                    # TypeScript types
├── supabase/                 # Database schema
└── public/                   # Static assets

1. Generate QR - Business creates payment intent with amount
2. Select Method - Customer chooses USDC or DurianBank
3. Verify - Primus zkTLS verifies payment data
4. Settle - USDC received, business can offramp to THB

• POST /api/primus/verify - Verify payment with zkTLS
• POST /api/durianbank/create-link - Generate DurianBank payment link
• POST /api/payment/complete - Mark payment as completed (webhook)

# Privy
NEXT_PUBLIC_PRIVY_APP_ID=

# Supabase
NEXT_PUBLIC_SUPABASE_URL=
NEXT_PUBLIC_SUPABASE_ANON_KEY=

# Primus Labs
NEXT_PUBLIC_PRIMUS_APP_ID=
PRIMUS_APP_SECRET=

# Mapbox
NEXT_PUBLIC_MAPBOX_TOKEN=

# Blockchain
NEXT_PUBLIC_USDC_ADDRESS=0x036CbD53842c5426634e7929541eC2318f3dCF7e
NEXT_PUBLIC_CHAIN_ID=84532
NEXT_PUBLIC_PLATFORM_WALLET=

# DurianBank (optional)
DURIANBANK_MERCHANT_ID=
DURIANBANK_SECRET=

vercel --prod

Make sure to add all environment variables in Vercel dashboard.

FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build
EXPOSE 3000
CMD ["npm", "start"]

1. Tourist Flow: Browse directory → Select business → Pay with USDC
2. Merchant Flow: Register → Complete onboarding → Generate QR → Receive payment
3. zkTLS Demo: Pay via DurianBank → Primus verifies → Proof displayed

This project was built for the ETH Chiang Mai 2026 hackathon. Contributions welcome!

MIT

Built with 💚 for Chiang Mai by the Durian team