# GeoPrice

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Guillermo Munoz](https://cerebralvalley.ai/u/tiempoespaciocl)
- **GitHub:** https://github.com/tiempoespacio/GeoPrice
- **Demo video:** https://www.youtube.com/watch?v=eqKYygr2MWg
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/321

Precios Cerca (Prices Near) is an adoption project for ordinary people, not for crypto users. It is built as levels, and each level asks a little more than the previous one.

Level 1 — Look. The neighbor opens geoprice.dapp.cl and checks whether everyday items are cheaper in their area. Browsing is free for everyone: no account, no wallet. The hook is simple curiosity: is the bread cheaper around my corner?

Level 2 — Publish. The neighbor wants to share a price and discovers they need MetaMask. No charge, no gas, no payment: the wallet is only identity (off-chain signature). That moment is the whole trick — a common person installs their first wallet without fear, because nothing is at stake yet. This is all the price geolocator does: look free, publish with 0 gas.

Upper levels — Sell. When they are ready, the marketplace is waiting: this is the territorial (6th) dimension of a multidimensional marketplace ecosystem (mercadoethereum.dapp.cl). Publishing products and selling needs gas (POL on Polygon), and that is where it appears for the first time — never at the door. The seller receives 99% in DAI (0.5% marketplace + 0.5% future user benefit).

The problem: in Latin America (and most of the world) there is no public, neighborhood-level price index. People overpay simply because nobody publishes what the shop around the corner charges.

How it works: people report what things cost in their own words — "handroll for 3000 at Alameda esquina Cumming" — and Muse Spark turns that sentence into structured, geolocated data in one of 18 categories that map 1:1 onto the marketplace taxonomy, so an observation can later be promoted into a sellable product with no reclassification. The server is strict on purpose: no clear category or no resolved coordinates, no publication. Every observation is pinned to IPFS with its own SEO page. Shop owners can claim their place ("this is my shop") and get verified.

Beyond marketplace or geolocator, this belongs in grassroots economic education: it gives ordinary people tools to exchange value among themselves — first information (prices), then goods (marketplace) — while learning blockchain by doing. Look free → publish with 0 gas → sell and receive 99% in DAI. A practical blockchain course with no tutorials: the need for gas is born later, not at the door.

Live: https://geoprice.dapp.cl — single Cloudflare Worker, D1 + IPFS, 11 languages, PWA, neighborhood map.

## More from Meta Global AI Developer Hackathon

- [Ripe](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/318)
- [Muse Shorts](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/319)
- [Total Recall](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/320)
- [Pocket Memory](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/322)
- [BSRP Old Age Home AI Smart Care Pvt. Ltd](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/323)
- [Naga Sai](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/324)

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