ZKP2P Pay

Accept fiat payments, receive crypto instantly.

ZKP2P Pay is a checkout SDK and hosted payment solution that enables merchants to accept fiat payments (via Venmo, CashApp, PayPal, Wise, and more) and receive USDC on-chain. Powered by zero-knowledge proofs, payments are verified cryptographically without exposing sensitive user data.

Why ZKP2P Pay?

• Instant Settlement - Receive USDC on Base immediately after payment verification
• Zero Custody Risk - Non-custodial smart contracts handle all funds
• Global Reach - Support for 9+ payment platforms across multiple currencies
• Simple Integration - Drop-in SDK with just a few lines of code
• Webhook Events - Real-time notifications for payment lifecycle events

How It Works

┌─────────────┐     ┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│   Merchant  │     │  ZKP2P Pay  │     │    User     │     │  Blockchain │
└──────┬──────┘     └──────┬──────┘     └──────┬──────┘     └──────┬──────┘
       │                   │                   │                   │
       │ 1. Create Session │                   │                   │
       │──────────────────>│                   │                   │
       │                   │                   │                   │
       │ 2. Redirect User  │                   │                   │
       │──────────────────────────────────────>│                   │
       │                   │                   │                   │
       │                   │ 3. User Pays      │                   │
       │                   │<──────────────────│                   │
       │                   │                   │                   │
       │                   │ 4. Verify Payment │                   │
       │                   │   (ZK Proof)      │                   │
       │                   │──────────────────────────────────────>│
       │                   │                   │                   │
       │ 5. Webhook        │                   │ 6. USDC Settled   │
       │<──────────────────│                   │                   │

1. Merchant creates checkout session with amount and recipient address
2. User is redirected to ZKP2P Pay hosted checkout
3. User sends fiat payment via their preferred platform (Venmo, CashApp, etc.)
4. User proves payment using the PeerAuth browser extension (generates ZK proof)
5. Merchant receives webhook when payment is verified
6. USDC is settled to merchant's wallet on Base

Quick Links

• Quickstart - Get started in 5 minutes
• SDK Reference - Detailed SDK documentation
• Webhooks - Handle payment events
• API Reference - REST API documentation

Supported Payment Platforms

Platform	Currencies
Venmo	USD
CashApp	USD
PayPal	USD, EUR, GBP
Wise	USD, EUR, GBP, and more
Revolut	USD, EUR, GBP
Zelle	USD
Mercado Pago	BRL, ARS, MXN
Monzo	GBP
N26	EUR

Need Help?

• Join our Discord for community support
• Check the GitHub repo for issues and contributions
• Follow @zkp2p for updates