Money Pot

Demo

About

Money Pot is the first brain-powered payment and savings protocol that lets users create secure "pots" of PYUSD (PayPal USD stablecoin), protected by a revolutionary one-letter, zero-knowledge authentication system called 1P. Instead of remembering complex passwords or managing seed phrases, users simply remember a single letter stored only in their minds. How it works: Create Pots: Users deposit PYUSD into smart contract "pots" secured by their brain-based 1-letter password Interactive Gaming: Others can attempt to unlock pots by solving the 1P challenge for entry fees, creating a skill-based earning ecosystem Dual Payment Rails: Support both PYUSD stablecoin and native ETH payments via Pyth oracle price feeds Explorer Integration: Real-time transaction tracking via Blockscout SDK with instant notifications Core Features: Zero-Knowledge Auth: Quantum-resistant, brain-only passwords with no storage or transmission PYUSD Native: Leveraging PayPal's $1B+ market cap stablecoin for mainstream accessibility Multi-Currency Support: Pay entry fees in PYUSD or ETH with live Pyth oracle conversions Gamified Savings: Pot creators earn 50% of entry fees; winners claim 40% of pot value Explorer-First UX: Blockscout SDK integration for transaction toasts and history tracking Auto-Expiry: Unclaimed pots return funds to creators after configurable timeouts Use Cases: Secure Savings: Brain-powered "piggy banks" immune to phishing and device theft Community Challenges: Skill-based earning games with provable fairness P2P Gifting: Send PYUSD pots with brain-based access codes Travel Wallets: Create temporary pots without exposing cold wallets Social Gaming: Influencers can monetize follower engagement through pot challenges Money Pot bridges traditional payments (via PYUSD) with cutting-edge Web3 security (ZK auth) to create the first truly brain-powered fintech platform.

How it's made

Tech Stack: Smart Contracts: Solidity + Hardhat 3 deployed on Sepolia testnet Stablecoin: PYUSD (PayPal USD) ERC-20 integration with OpenZeppelin SafeERC20 Price Oracle: Pyth Network oracle for real-time ETH/USD conversions, enabling native token payments Explorer SDK: Blockscout App SDK for transaction toasts, history popups, and tx interpretation Frontend: React + ethers.js with Blockscout SDK hooks (useNotification, useHistory) Security: OpenZeppelin ReentrancyGuard, custom access controls, time-locked expirations Architecture: 1. Smart Contract Layer (Hardhat 3): Built on Solidity 0.8.20+ with modular design: MoneyPotManager.sol: Core pot creation, attempts, payouts PYUSD token integration via constructor-injected ERC-20 address (no hardcoding) Pyth oracle integration for multi-currency entry fees (PYUSD or ETH) Event emissions for Blockscout SDK tracking (PotCreated, PotAttempted, PotSolved) 2. Oracle Integration (Pyth Network): Real-time ETH/USD price feeds from Pyth's on-chain oracle Dynamic entry fee calculation: users can pay in PYUSD or equivalent ETH value Fallback mechanisms for oracle downtime Gas-optimized price updates with configurable staleness tolerance 3. Explorer Integration (Blockscout SDK - Prize Track): This is where Money Pot shines for the Blockscout bounty: NotificationProvider wraps entire app for global transaction state useNotification hook displays pending/success/error transaction toasts useHistory popup shows recent pot creations, attempts, and wins per address Transaction interpretation layer translates complex pot interactions into human-readable summaries Mobile-responsive design for on-the-go pot gaming 4. PYUSD Integration: Leveraging PayPal's $2.6B+ market cap stablecoin for mainstream appeal Testnet faucet access for developers (free PYUSD for testing) ERC-20 standard compliance enables seamless wallet integrations Position Money Pot as first PYUSD-native gaming protocol 5. 1P Protocol (Brain-Based Auth): Off-chain verification service generates color-grid challenges Users submit directional inputs (Up/Down/Left/Right) based on password position Zero-knowledge: password never transmitted or stored on-chain Fixed difficulty (3 rounds) for MVP; roadmap includes adaptive ZK circuits Oracle-signed success proofs trigger on-chain payouts Notable Hacks & Innovations: Hacky Brilliance #1 - Dual Currency Entry Fees: Instead of forcing PYUSD-only, we integrated Pyth oracle to accept ETH payments at live exchange rates. This required custom attemptPotWithETH() function that: Fetches current ETH/USD price from Pyth Calculates equivalent PYUSD fee in wei Validates msg.value matches conversion Wraps native ETH into WETH → swaps to PYUSD (future: DEX integration) Processes attempt with unified PYUSD logic Hacky Brilliance #2 - Blockscout SDK Deep Integration: We didn't just add transaction notifications - we created pot-specific interpretations: Custom transaction parser translates createPot() into "New $X pot created - expires in Y days" Attempt transactions show "Hunter attempted pot #Z - paid $A fee" Win notifications trigger confetti animation + explorer link All tied to Blockscout's real-time indexing for instant feedback Hacky Brilliance #3 - PYUSD Reserve Optimization: Since PYUSD is backed 1:1 by USD deposits and treasuries, we implemented: Interest accrual tracking for platform-held PYUSD (future feature) Dynamic fee redistribution based on pot duration (longer pots = lower platform cut) Gas-efficient batch transfers using OpenZeppelin's multicall patterns Partner Technology Benefits: Pyth Oracle: Enabled multi-currency UX without trusted price feeds Sub-second price updates for fair entry fee calculations Cross-chain compatibility for future expansion Blockscout SDK: Transformed complex contract interactions into intuitive UX Eliminated need for separate block explorer tabs Mobile-first notifications boosted user engagement Real-time tx interpretation = instant gratification for gamers PYUSD Stablecoin: Instant mainstream credibility (PayPal brand) Stable value eliminates crypto volatility concerns Easy fiat on/off-ramps via PayPal ecosystem Regulatory clarity (Paxos-issued, NYDFS oversight) Hardhat 3: Local forking enabled PYUSD integration testing without testnet limits Built-in Sepolia deployment scripts with verification Gas reporting optimized contract efficiency (under 2M gas per pot) Plugin ecosystem accelerated development (hardhat-deploy, hardhat-etherscan) OpenZeppelin: Battle-tested security patterns prevented reentrancy attacks SafeERC20 eliminated token transfer edge cases Ownable + ReentrancyGuard = production-ready contracts in days Upgradeability patterns ready for mainnet migration