ChainCrowdFund

ChainCrowdFund is a decentralized crowdfunding platform enabling users to create and fund campaigns across multiple blockchain networks using USDC. Built with Circle's Cross-Chain Transfer Protocol (CCTP), it facilitates seamless cross-chain contributions.

🚀 Key Features Multi-Chain Funding

• Local: Direct USDC contributions on Arbitrum Sepolia
• Cross-Chain: Fund from Ethereum Sepolia, Avalanche Fuji, Base Sepolia
• Privy Integration: Purchase USDC with cards, Apple Pay, bank transfers 🛡️ Security & Identity
• Self Protocol KYC: identity verification
• Age & Sanctions Screening: 18+ requirement, OFAC compliance
• Smart Contract Safety: Automatic refunds, deadline enforcement
• Cross-Chain Validation: Secure message verification

🎨 User Experience Connect wallet via Privy Verify identity with Self Protocol Browse and fund campaigns Track contributions in real-time

🌐 Supported Networks Arbitrum Sepolia, Ethereum Sepolia, Avalanche Fuji, Base Sepolia

💰 Innovation Combines blockchain security with cross-chain interoperability and traditional payment methods, making decentralized crowdfunding accessible to mainstream users while maintaining crypto-native features. Use Cases: Crypto projects, creative ventures, social impact initiatives, tech innovation funding.

Three-Layer Security Architecture powers the platform through an innovative authentication stack. Privy handles frictionless wallet connections with automatic embedded wallet creation, while Self Protocol enforces enterprise-grade identity verification including KYC compliance (age verification, OFAC sanctions screening, and geographic restrictions). This creates an unprecedented balance between user experience and regulatory compliance that traditional platforms cannot match. Native Cross-Chain USDC Integration leverages Circle's CCTP V2 to enable contributions from Ethereum, Avalanche, Base, and Arbitrum networks. The platform automatically handles token burning on source chains, Circle attestation polling, and seamless minting on the destination chain - all abstracted away from users. This eliminates the need for risky bridge protocols while maintaining Circle's native USDC liquidity across all supported networks. Integrated On-Ramp Solutions through Privy's comprehensive funding infrastructure allow users to contribute using traditional payment methods including credit cards, Apple Pay, Google Pay, external wallets, cryptocurrency exchanges, and bank transfers. This removes the last barrier to crypto adoption by enabling fiat-to-contribution flows directly within the platform. Advanced Smart Contract Architecture features gas-optimized contributor tracking, dual-state contribution aggregation, and comprehensive cross-chain audit trails. The contract maintains complete transparency with original transaction hashes and source chain domains while preventing replay attacks through sophisticated message processing controls. Innovative Technical Implementations include real-time Circle attestation polling with intelligent timeout handling, localStorage-based verification state management, and seamless cross-chain UX that rivals centralized platforms. The system supports both direct contributions and cross-chain flows with identical user experiences. Global Accessibility Without Compromise - Contributors can fund campaigns from their preferred blockchain using their preferred payment method, while creators benefit from USDC stability and global reach. The platform handles all technical complexity including network switching, token approvals, and cross-chain bridging automatically.