A production-ready, soulbound NFT certification system for live events on Base L2.
Attendees claim NFTs as digital certificates by proving their inclusion in an allowlist via Merkle proofs.

The system consists of three main components:

1. Smart Contract (Solidity, Foundry) – EventCertificate ERC721 contract
2. Backend Services (Express.js) – Proof & Relayer APIs
3. Frontend DApp (React) – User-facing claim portal