Sink Overview with "trust score"
pdf view
second station of a sink
search function with location feature

🌱 Cula Stories - by team stackovergrow

Your carbon credit isn’t a dead PDF anymore - it’s a story you can share, prove, and trust.

👉 Check it Out

It's live right now at https://stackovergrow.tech/. Go check it out!

🚀 Overview

Cula Stories turns carbon offsets into something shareable: a visual journey from the project on a map, through every real step that backed the certificate, to a clear trust signal - so a small team or individual buyer can show what actually happened and how credible it is, not just hand over a grey document.

Built on data provided by the amazing people at Cula · Hack HPI 2026

🌍 The Problem

You bought a carbon credit. Now what?

For many small companies and individuals, the purchase ends in a grey PDF - hard to read, impossible to show clients or friends, and silent on what work was really done behind that line item.

Nothing to share - no simple link, no visual, no “here’s our impact” moment
No story - the certificate doesn’t walk anyone through biomass, pyrolysis, delivery, or proof on the ground
No trust at a glance - buyers can’t quickly see whether the project looks solid or shaky

Climate action deserves to be visible and credible, not buried in an attachment.

💡 Our Solution

Cula Stories gives every credit a living narrative:

Share it - deep links, QR codes, and journeys you can send or embed - not just a static file
Show what was done - map + step-by-step supply chain: distances, lifecycle data, real proof documents
Show how trustworthy it is - an automated trust score with breakdown (supply chain, proofs, sensors, documents, reputation, and more)

Pick a project → explore the journey → open proofs → read the trust score, all in one flow.

📸 Live Demo

Explore projects on the map

Search, filter by radius, browse hundreds of carbon removal projects - the entry point to your story.

Map overview with search and sink list

Start with impact and trust

Net CO₂e, overall trust level, operator context - then Next station to enter the real journey behind the certificate.

Sink detail card with trust score

Walk the supply chain

Each step shows what happened for this credit: emissions, distance, proofs - not abstract boilerplate.

Supply chain checkpoint with lifecycle data

Open the proof

Weighing slips, delivery docs, certificates - tied to the map and optionally reviewed by AI for authenticity.

Proof document viewer

🛠 Features (user value)

🗺️ Map-first discovery - find and open the project behind an offset
🔗 Shareable journeys - links & QR so marketing, HR, or friends get the full picture
📖 Story, not spreadsheet - guided stations from source to sink
🤝 Trust you can show - one score + a breakdown everybody understands
📄 Proof on demand - documents next to the step they belong to
🤖 AI on proofs - LLM-assisted authenticity signal
🎬 Video export - turn a journey into a clip for decks or social

🧠 How It Works

Cula data  ──▶  FastAPI + SQLite cache  ──▶  React + MapLibre (Cula Stories UI)
                       │
              Trust engine (7 signals):
              supply chain · proofs · emissions · materials ·
              sensors · document analysis (LLM) · org reputation

We cache registry data, flatten event graphs into journey steps, compute trust scores, and render maps + cards + proofs - optimized for telling and sharing the story of a credit.

🌾 Impact

Who	What changes
Small business / team	Turn a line item into a link you’re proud to post
Individual buyers	Explain your offset in one conversation, with receipts
Communications / CSR	Assets that are accurate, visual, and defensible
Anyone who sells “green”	Proof + trust next to the claim

🏆 Why It Stands Out

	Cula Stories	PDF certificate only
Share	Link, QR, journey	Attach a grey doc
Explain	Map + steps + proofs	Fine print
Trust	Scored, broken down	Opaque

We’re not replacing the certificate - we’re giving it a voice.

⚙️ Tech Stack

Layer	Stack
Frontend	React 19 · TypeScript · Vite 6 · MapLibre GL
Backend	Python · FastAPI · SQLite (aiosqlite)
AI	AWS Bedrock (Claude Sonnet)
Web intel	DuckDuckGo Search
Video	Playwright + FFmpeg
Maps	MapLibre GL JS · Carto Positron · OSRM routing