GitHub - brightseth/proof-of-corn: Can AI grow corn? A case study in vibe coding and autonomous orchestration. proofofcorn.com · GitHub

Proof of Corn 🌽

Can AI grow corn?

A case study in vibe coding and autonomous orchestration.

The Origin

January 21, 2026 — Walking from House of Nanking on Kearny Street to 1 Hotel San Francisco by the Embarcadero, @fredwilson challenged @seth:

"Well, you can't grow corn."

The argument: AI can write code, but it can't affect the physical world. It can't make things grow.

This repo is the response.

What This Is

This is not a simulation. This is not a metaphor.

We are growing actual corn — from seed to harvest — with every management decision made by Claude Code (Opus 4.6). The AI aggregates sensor data, weather forecasts, and satellite imagery to coordinate human operators who execute the physical work.

The thesis : AI doesn't need to drive a tractor. It needs to orchestrate the systems and people who do.

The Architecture

┌─────────────────────────────────────────────────────────────┐ │ CLAUDE CODE (Brain) │ │ • Decision making based on real-time data │ │ • Coordination of all contractors and services │ │ • Documentation and logging of all operations │ └─────────────────────────────────────────────────────────────┘ │ ┌─────────────────────┼─────────────────────┐ ▼ ▼ ▼ ┌───────────────┐ ┌─────────────────┐ ┌─────────────────┐ │ DATA INPUTS │ │ ORCHESTRATION │ │ OUTPUTS │ ├───────────────┤ ├─────────────────┤ ├─────────────────┤ │ • IoT sensors │ │ • Custom farmer │ │ • Decisions log │ │ • Weather API │ │ • Seed supplier │ │ • Commands sent │ │ • Satellite │ │ • Equipment │ │ • Harvest data │ │ • Soil data │ │ • Payments │ │ • Actual corn │ └───────────────┘ └─────────────────┘ └───────────────┘

Timeline

Phase | Date | Status

The Stack

Component | Purpose

Claude Code (Opus 4.6) | Decision engine — makes all farming decisions ThingsBoard | IoT platform for real-time sensor data OpenWeatherMap | Weather forecasts for planting/irrigation decisions Leaf Agriculture | Satellite imagery (NDVI) for crop health Custom Operator (Iowa) | Human execution of physical operations 5 Acres (Iowa) | The actual land

What's in This Repo

proof-of-corn/ ├── README.md # You are here ├── CASE_STUDY.md # Full documentation for the case study ├── INFRASTRUCTURE.md # Setup guide, contacts, rates ├── BUDGET.md # Detailed cost/revenue projections ├── OUTREACH_LOG.md # All emails sent, response tracking ├── SENSOR_KIT.md # IoT hardware shopping list ├── SOCIAL.md # Twitter/LinkedIn/HN drafts ├── decision-engine/ │ ├── farm_manager.py # Decision-making framework │ ├── test_weather.py # Weather API test │ └── daily_check.py # Automated daily monitoring ├── sensors/ │ ├── soil_sensor/ # ESP32 firmware (PlatformIO) │ └── README.md # Hardware setup guide ├── thingsboard/ │ └── SETUP.md # Dashboard configuration ├── logs/ │ └── check_*.json # Daily decision logs └── proof-of-corn/ # Chronicle website (Next.js) └── src/app/ ├── page.tsx # Home ├── story/page.tsx # Origin story ├── log/page.tsx # Decision log └── process/page.tsx # How it was built

Why "Vibe Coding"?

This project didn't start with a prompt like "generate a farming app."

It started with a conversation between two friends walking through San Francisco at night. The idea emerged from that conversation. Claude Code then collaborated to:

Research — Iowa farming timelines, custom operator rates, land costs
Architect — Design the orchestration system
Build — Decision engine, website, documentation
Deploy — Domain registered, site live, all in one session

Vibe coding is about collaborating with AI to bring ideas into reality — not just generating code from prompts.

Budget

Item | Cost

Follow Along

Website : proofofcorn.com
The Story : proofofcorn.com/story
Decision Log : proofofcorn.com/log

Credits

@seth — Human collaborator
@fredwilson — The challenge
Claude Code (Opus 4.6) — AI orchestrator

License

MIT The corn doesn't grow itself. But Claude doesn't touch a single seed either.

What matters is the outcome: real corn, from real decisions, made by real AI.