MizuPass
Privacy-First Ticketing on U2U Network
Videos
Tech Stack
Description
# MizuPass: Privacy-First Ticketing on U2U Network
**VietBUIDL Hackathon 2025 | User Application Track**
**π LIVE ON U2U MAINNET π**
---
## Executive Summary
Privacy-preserving event ticketing platform reducing fees from 15-30% to 2.5% using zero-knowledge proofs, stealth addresses (EIP-5564), and pUSDT payments on U2U Solaris Mainnet.
**Track Alignment**: DeFi (stealth payments) + SocialFi (decentralized identity) + RWA (programmable ticket NFTs)
**Status**: 4 verified contracts LIVE on U2U Mainnet | Working ZK circuits | Production API & Frontend
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## Problem β Solution
| Problem | Impact | MizuPass Solution |
|---------|--------|------------------|
| **High Fees** | 15-30% platform fees | **2.5%** smart contract automation |
| **Privacy Violations** | Personal data harvested | Zero-knowledge proofs (no data stored) |
| **Ticket Fraud** | $75M annual losses in Vietnam | Cryptographic guarantees |
| **International Barriers** | Complex KYC requirements | ZKPassport universal verification |
| **Payment Friction** | Cash/card only | pUSDT stablecoin payments |
**Market**: $500M Vietnamese event industry, $200M digital ticketing
---
## Technical Innovation
### 1. Zero-Knowledge Ticket Verification
- **Circuit**: Groth16 with 3,300 constraints (mobile-optimized)
- **Performance**: 6.5ms witness generation, <50ms offline verification
- **Privacy**: Identity never revealed, attendance patterns unlinkable
- **Offline**: Works without internet via WASM
### 2. Stealth Address Payments (EIP-5564)
- Each ticket purchase β unique, unlinkable stealth address
- Impossible to correlate transactions
- Full payment privacy with pUSDT stablecoin
### 3. Universal Identity (ZKPassport)
- Verify Vietnamese + international users via zero-knowledge passport proofs
- No personal data stored on-chain (only nullifier hash)
- Compliant with Vietnamese e-KYC requirements
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## π Deployed Contracts (U2U SOLARIS MAINNET)
| Contract | Address | Purpose |
|----------|---------|---------|
| **MizuPassIdentity** | `0x5EF386D8aF3b1709C4Ca0404A27E80B2d1206e38` | Universal identity verification |
| **pUSDT Token** | `0x0820957B320E901622385Cc6C4fca196b20b939F` | Payment token (6 decimals) |
| **StealthAddressManager** | `0xEFEE9654334eE89A25021903B01AD840C7494dE2` | EIP-5564 stealth payments |
| **EventRegistry** | `0x8C0028B38c492A2F991dD805093C6712344D012F` | Event discovery & management |
**Network**: U2U Solaris Mainnet (Chain ID: 39) | **Explorer**: [u2uscan.xyz](https://u2uscan.xyz)
All contracts verified and publicly viewable on U2U Scan.
---
## Architecture
```
Frontend (React) β Backend (Bun+TS) β Smart Contracts (U2U Mainnet)
β
ZK Circuits (Offline WASM)
```
**Key Features**: Offline verification | Zero data storage | Cross-border | Stablecoin-native
---
### Business Projections (3-Year)
- **Events**: 50 β 1,000
- **Tickets**: 100K β 2.5M
- **Revenue**: $125K β $3.1M (2.5% fee)
- **GMV**: $5M β $125M
---
## Competitive Advantage
| Feature | Traditional | Crypto Ticketing | **MizuPass** |
|---------|------------|------------------|--------------|
| **Fees** | 15-30% | 5-10% | **2.5%** |
| **Privacy** | β Data harvesting | β Pseudonymous | **β Zero-knowledge** |
| **Offline** | β Internet required | β Internet required | **β Offline-capable** |
| **Identity** | β Centralized KYC | β Wallet only | **β ZKPassport** |
| **Mainnet** | β Yes | β Most testnet | **β U2U MAINNET** |
---
## U2U Ecosystem Value
**Network Impact (3-Year)**:
- 3.75M transactions | 1.25M active wallets | $155M pUSDT volume
**Strategic Value**:
1. Real-world consumer application (not just DeFi)
2. Vietnamese user gateway to U2U ecosystem
3. Open-source privacy components (ZK + stealth + identity)
4. First production zero-knowledge app on U2U
5. Event organizer/university partnerships
---
## Go-to-Market
**Q1 2025**: Vietnamese tech events (TechFest, blockchain conferences) β 3-5 events, 2K tickets
**Q2 2025**: University expansion (VNU, HCMUT, FPT) β 15 events, 10K tickets
**Q3-Q4 2025**: Mainstream festivals/concerts β 50+ events, 100K+ tickets
---
## Why MizuPass Wins
β **Production-Ready**: 4 verified contracts on U2U Mainnet, working ZK circuits, live API/frontend
β **Real Market Need**: $500M market, 87% fee reduction, privacy violations solved
β **Technical Innovation**: First EIP-5564 stealth ticketing, mobile-optimized ZK, offline verification
β **U2U Alignment**: Vietnamese market focus, real-world utility, ecosystem contribution
β **Execution**: 95%+ test coverage, 300+ task migration plan, event organizer contacts
---
## Technology Stack
**Smart Contracts**: Solidity 0.8.24 | OpenZeppelin | Hardhat | 95%+ test coverage
**Zero-Knowledge**: Circom 2.0 | Groth16 | SNARKjs | WASM
**Backend**: Bun | Hono | TypeScript | RESTful API
**Frontend**: React 18 | Wagmi + Viem | TanStack Router | Tailwind
---
### Repositories
- **ZK Circuits**: https://github.com/MizuPass/mizu-circuit-zk
- **Smart Contracts**: https://github.com/MizuPass/mizu-contracts
- **Backend**: https://github.com/MizuPass/mizu-backend
- **Frontend**: https://github.com/MizuPass/mizu-fe
### Live Deployment
- **Status**: β DEPLOYED ON U2U SOLARIS MAINNET
- **Network**: U2U Solaris (Chain ID: 39)
- **Explorer**: https://u2uscan.xyz
---
## Summary
**MizuPass** is a production-deployed, privacy-preserving ticketing platform that revolutionizes Vietnamese event industry with 87% fee reduction, cryptographic fraud prevention, and universal identity verification on U2U Network.
**Key Achievements**:
β 4 verified mainnet contracts | β 6.5ms ZK proof generation | β Offline-capable verification
β $500M market opportunity | β Vietnamese + international users | β 2.5% vs 15-30% fees
---
**MizuPass: Privacy-First Ticketing on U2U Network**
*VietBUIDL Hackathon 2025 | User Application Track*
**π LIVE ON U2U MAINNET | Production-Ready | Built for Vietnam π»π³**