OnChainIn

Event operations + Cardano-verified attendance

Create events (with AI), manage applications, run QR/wallet check-in on Cardano Preprod, and issue certificates that can prove attendance on-chain.

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What it does

Role	You can…
Organizer	AI create event · approve people · check-in desk · volunteers · sponsors · budget · certificates
Participant	Browse · apply · tickets · Cardano check-in · certificates · proof passport
Volunteer	Apply for roles · tasks · leaderboard · proof
Sponsor	Discover events · submit interest · impact summary

Create event → Apply → Approve → Check-in (QR / Lace) → Certificate → Verify

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Quick start (local)

npm install
cp .env.example .env
npm run dev

Open http://localhost:3000

Without Supabase the app still works on this browser only (localStorage).

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Go multi-user online (Supabase + Vercel)

Full guide: MULTI_USER_SETUP.md

1) Supabase (shared database) — ~5 min

1. Create a free project at supabase.com
2. SQL Editor → paste & run
   supabase/migrations/001_onchainin_multiuser.sql
3. Settings → API → copy:
   • Project URL → VITE_SUPABASE_URL
   • anon public key → VITE_SUPABASE_ANON_KEY
4. Put them in .env (see .env.example)
5. Restart npm run dev
   Header badge should say Online · multi-user

2) Vercel (public website)

1. Push this repo to GitHub
2. vercel.com → Import this repo
3. Framework: Vite · Build: npm run build · Output: dist
4. Add the same env vars as .env
5. Deploy → share the URL

vercel.json already rewrites SPA routes to index.html.

3) Cardano check-in (optional but core for demos)

1. Install Lace (or another CIP-30 wallet)
2. Switch wallet network to Preprod
3. Get test ADA from the Preprod faucet
4. Optional: Blockfrost Preprod project → VITE_BLOCKFROST_PROJECT_ID
5. On event day: participant opens Tickets → connect wallet → Check in on-chain

4) Env reference

VITE_SUPABASE_URL=https://xxxx.supabase.co
VITE_SUPABASE_ANON_KEY=eyJ...
VITE_CARDANO_NETWORK=preprod
VITE_BLOCKFROST_PROJECT_ID=preprodXXXXXXXX

Variable	Required?	Purpose
VITE_GROQ_API_KEY	Optional	Enables AI event drafts through Groq
VITE_SUPABASE_URL + ANON_KEY	For multi-user	Shared events/apps/check-ins
VITE_CARDANO_NETWORK	Recommended	preprod for demos
VITE_BLOCKFROST_PROJECT_ID	Optional	Chain queries via Blockfrost

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Stack

Layer	Tech
UI	React 19 · Vite · Tailwind · Mesh.js
App data	localStorage + optional Supabase (oci_store)
Chain	Cardano Preprod · Mesh · metadata label 674
Hosting	Vercel (or any static host of dist)

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Scripts

npm run dev      # local
npm run build    # production bundle → dist/
npm run preview  # preview production build

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Project layout (important folders)

src/pages/          # Home, auth, dashboards, verify
src/lib/cardano.ts  # Wallet + on-chain check-in
src/lib/cloudSync.ts# Supabase multi-user sync
supabase/migrations # SQL to run once in Supabase
public/logo.png     # Brand mark

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Demo login

1. Sign up / Sign in with any name + username + role
2. Organizer creates an event (or AI create)
3. Participant applies → organizer approves
4. Check-in on event day → issue certificate → open verify link

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Credits

Made with love ❤️ by team RAGNAROK

Name	GitHub	Email
Anshul Nautiyal	ANSHUL-REAL	anshulnautiyal0512@gmail.com
Sourab Reddy	SOURABREDDY394	sourabreddimalla@gmail.com