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Gasless, Real-Time, Multi-Chain Event Management Platform Powered by Yellow SDK

The Event Micropayments Network (EMN) is a decentralized event management platform that enables instant, gasless crypto payments between attendees and vendors at live events — from music festivals to tech conferences — using Yellow SDK and the ERC-7824 (Nitrolite) protocol.

Attendees can pay with a single QR scan, vendors receive instant balances, and event organizers gain full analytics and settlement transparency — all with zero per-transaction gas fees.

1. Yellow SDK State Channels Each attendee–vendor pair opens an off-chain payment channel using Yellow SDK’s implementation of ERC-7824.

Scanning a vendor’s QR code triggers a payment within the state channel. Payments are cryptographically signed off-chain and instantly reflected in the vendor’s balance. The final net settlement is written on-chain only once at the end of the event. 2. Envio HyperIndex & HyperSync HyperIndex indexes all Payment, Refund, and Loyalty events from contracts across multiple L2s. HyperSync ensures near-instant access to both live and historical data. A GraphQL API (via Hasura) exposes queries for dashboards, analytics, and community transparency. 3. Event Organizers Dashboard Organizers get a live control panel with:

Real-time vendor analytics (sales, revenue, refunds) Heatmaps and transaction volume tracking Sponsor engagement insights Multi-chain reconciliation reports