PrivatePay-Mantle

The first on-chain untraceable, unidentifiable private payments on Mantle Network

Simply means: Stealth Crypto Payments using multilayer forks

Powered by ECDH + secp256k1 + BIP 0352/EIP 5564 + ROFL DarkPool Mixer

🚨 The Problem: Financial Privacy is Broken

Real-Life Story

Alice, a legendary dev, won the Move AI Hack and received $13,000 prize money.

Bob, another participant who won another prize in the same hackathon, discovered his co-founder wasn't trustworthy about receiving prize money. Bob texted all 12 winners asking for the organizer's wallet address. Within minutes, using blockchain explorers and intelligence tools, he identified:

• Which wallet belonged to whom

• Exactly how much each person received

• Their entire transaction history

This is a serious concern. Nobody wants their wallet exposed — it makes them vulnerable to targeted attacks, extortion, and financial loss.

The Core Issues

❌ Payments on public blockchains are NOT private

• Traceable through tools like Arkham Intelligence

• Trackable via Dune Analytics and explorers

• Identifiable by anyone with basic skills

❌ Results:

• Fear of transacting

• Inconvenience for legitimate users

• Financial loss from targeted attacks

• Privacy violations for everyone

✅ The Solution: PrivatePay

Where every transaction is fully private, anonymous, unidentifiable, and untrackable.

Core Benefits

• ✨ Sender privacy: Your wallet is never linked to the transaction

• ✨ Receiver privacy: Recipients' identities remain hidden

• ✨ Observer blindness: Third parties see nothing linkable

• ✨ Simple UX: Like Stripe links, but every transaction is a new, invisible wallet

Comparison with Other Privacy Solutions

Key Features

🔒 Infinite Untraceable Stealth Accounts

• Each payment generates a fresh stealth sub-account

• Unlimited transactions, unlimited mixers

• One single DarkPool

💼 Static Payment Links

• Share a single payment link (e.g., amaan.privatepay.me)

• Each access generates a unique stealth address

• No complex setup required

🔐 Complete Unlinkability

• Sender cannot identify receiver

• Receiver cannot identify sender

• Observers see nothing linkable

📱 Progressive Web App (PWA)

• Install on mobile and desktop devices

• Offline functionality with service worker caching

• Push notifications for payment received events

• Native app-like experience

📲 Mobile Wallet Support

• Full iOS MetaMask mobile app integration

• Android MetaMask support

• Seamless deep linking and auto-connect

• Optimized mobile connection flow

• Works in MetaMask's in-app browser

🎯 Points & Rewards System

• Earn points for various actions (payments, logins, etc.)

• Leaderboard and rewards tracking

• Level-based progression system

🚀 How It Works

Three-Step Process

1. Create Payment Link 🔗

• User creates static payment link (e.g., amaan.privatepay.me)

• System generates meta address (static identifier)

• Link can be shared publicly without privacy risk

2. Receive Payment 💸

• Payer accesses link → generates unique stealth address

• Payment sent to stealth address on Mantle Network

• Transaction is unlinkable to recipient's identity

3. Manage Funds 💰

• Recipient monitors stealth addresses automatically

• Funds can be withdrawn to main wallet

• Full transaction history in private dashboard

📊 Market Opportunity

Total Addressable Market (TAM)

Target Users

• Individuals: Privacy-conscious crypto users

• Freelancers: Receive payments without exposing income

• Businesses: Accept payments without revealing revenue

• DAOs: Anonymous treasury management

• Hedge Funds: Private money movements

• High Net Worth: Protection from targeted attacks

⚡ Future Roadmap

Phase 1: Core Platform ✅

• ✅ Stealth address generation

• ✅ Payment link system

• ✅ Dashboard and monitoring

• ✅ Mantle wallet integration (Desktop & Mobile)

• ✅ iOS/Android MetaMask mobile app support

• ✅ Progressive Web App (PWA) with offline support

• ✅ Points & rewards system

Phase 2: Enhanced Privacy 🚧

• 🚧 Zero-knowledge proofs (Plonky2)

• 🚧 Bulletproofs for amount hiding

• 🚧 Advanced DarkPool integration

• 🚧 ROFL-style monitoring

Phase 3: Payment Expansion 🔮

• 🔮 Private credit and debit card payments

• 🔮 Private cross-chain bridges

• 🔮 Disposable wallets

Phase 4: Enterprise Features 🔮

• 🔮 Hedge fund money moves

• 🔮 API marketplace

• 🔮 White-label solutions

• 🔮 Compliance tools

Endless Possibilities

• No more "James Waynn Exposer" incidents

• End to HyperLiquid wallet reveals

• Protection for high-value transactions

• Privacy for everyone, everywhere

📱 Progressive Web App (PWA)

PrivatePay is a fully functional Progressive Web App that can be installed on mobile and desktop devices.

Installation

Mobile (iOS):

1. Open PrivatePay in Safari

2. Tap Share → "Add to Home Screen"

3. Enjoy native app experience

Mobile (Android):

1. Open PrivatePay in Chrome or MetaMask mobile browser

2. Tap menu → "Add to Home Screen" or "Install App"

3. Connect wallet using MetaMask mobile app

4. Launch from home screen

Desktop (Chrome/Edge):

1. Look for install icon in address bar

2. Click "Install" when prompted

3. App opens in standalone window

PWA Features

• ✅ Offline Support - Cached assets work offline

• ✅ Push Notifications - Get notified when payments are received

• ✅ Fast Loading - Service worker caching for instant loads

• ✅ Native Experience - Standalone display mode

• ✅ Auto-Updates - Automatic service worker updates

Mobile Wallet Connection

PrivatePay supports MetaMask on both desktop and mobile devices:

Desktop:

• Direct browser extension integration

• Standard MetaMask connection flow

Mobile (iOS/Android):

• MetaMask SDK integration for seamless mobile experience

• Deep linking to MetaMask mobile app

• Auto-connect when returning from MetaMask

• Works in MetaMask's in-app browser

• Optimized connection flow for mobile devices

🔗 Links & Resources

• Pitch Deck: https://docs.google.com/presentation/d/1CZx4tTtaLhS0rbD4v0tlDC7OkFB0GPcWqbD43B9dXX0/edit?usp=sharing

• Demo Video: https://youtu.be/8Jwvu0nj2yA

• Pitch Video: https://youtu.be/p5Pgx0ZBUqA

• Live Website: https://private-pay-mantle-three.vercel.app/

• Github: https://github.com/AmaanSayyad/Private-Pay-Mantle

Everything was built during the hackathon. Contracts, Frontend, Wallet Integrations, RPC issues resolved and done.