MizuPass

MizuPass: Privacy-First Ticketing on U2U Network

VietBUIDL Hackathon 2025 | User Application Track

🚀 LIVE ON U2U MAINNET 🚀

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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 → SOLUTION

Vietnamese Event Industry Problems:

• High Fees: 15-30% platform fees → MizuPass: 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

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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 → 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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🚀 DEPLOYED CONTRACTS (U2U SOLARIS MAINNET)

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: https://u2uscan.xyz

All contracts verified and publicly viewable on U2U Scan.

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ARCHITECTURE

Frontend (React) → Backend (Bun+TS) → Smart Contracts (U2U Mainnet)

↓

ZK Circuits (Offline WASM)

Key Features: Offline verification | Zero data storage | Cross-border | Stablecoin-native

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Business Projections (3-Year):

• Events: 50 → 1,000

• Tickets: 100K → 2.5M

• Revenue: $125K → $3.1M (2.5% fee)

• GMV: $5M → $125M

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COMPETITIVE ADVANTAGE

Traditional | Crypto Ticketing | MizuPass

Fees: 15-30% | 5-10% | 2.5%

Privacy: ✗ | ✗ | ✓ Zero-knowledge

Offline: ✗ | ✗ | ✓ Offline-capable

Identity: ✗ | ✗ | ✓ ZKPassport

Mainnet: ✓ | ⚠ Most testnet | ✓ U2U MAINNET

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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

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GO-TO-MARKET

Q1 2025: Vietnamese tech events (TechFest, blockchain conferences) → 3-5 events, 2K tickets

Q2 2025: University expansion (VNU, HCMUT, FPT) → 15 events, 10K tickets

Q3-Q4 2025: Mainstream festivals/concerts → 50+ events, 100K+ tickets

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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

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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

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LIVE DEPLOYMENT

Status: ✅ DEPLOYED ON U2U SOLARIS MAINNET

Network: U2U Solaris (Chain ID: 39)

Explorer: https://u2uscan.xyz

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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:

✅ 4 verified mainnet contracts

✅ 6.5ms ZK proof generation

✅ Offline-capable verification

✅ $500M market opportunity

✅ Vietnamese + international users

✅ 2.5% vs 15-30% fees

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MizuPass: Privacy-First Ticketing on U2U Network

VietBUIDL Hackathon 2025 | User Application Track

🚀 LIVE ON U2U MAINNET | Production-Ready | Built for Vietnam 🇻🇳