CARBONJOURNEY

Inspiration

There is an increased need for more trust and transparency in carbon certification. Today, many companies talk about sustainability, but it is not always easy to check whether the data is correct and reliable. We wanted to build a tool that helps people understand and verify carbon-related information more easily.

What it does

CARBONJOURNEY helps users check carbon certification data in a clear and simple way. It collects data, organizes it into a standard format, applies verification rules, and shows possible problems such as missing or inconsistent information. This helps users review carbon data more easily and supports more transparent sustainability reporting. Furthermore, CARBONJOURNEY visualizes the journey from biomass to biochar so it is easy to understand.

How we built it

Through the carbon removal data API provided by cula, we fetch the data of biochar sinks and reconstruct the graph of their origin. Based on that graph, we apply rules for verification and a graph neural network (variational auto-encoder) for anomaly detection. Through the parsed graph of biochar origin, we can build up its story.

Challenges we ran into

The data was a bit messy and came in different formats, so we had to clean and organize it first. Another challenge was creating actually helpful verification rules that were still simple enough for users to understand. We also had to find a clear way to present the results, because even good data is not useful if people cannot read it easily 🙂.

Accomplishments that we're proud of

We delivered a working end-to-end prototype within 23 hours that identifies inconsistencies in carbon data effectively.

What we learned

In the past 23 hours, Mika learned to use a variational auto-encoder for anomaly detection on graphs. Seray set up Cursor and implemented the frontend on her own. Ilayda learned how to build a deterministic DAG-based pipeline that verifies supply-chain events, cross-checks data sources, and aggregates rule outcomes into a confidence score. Hyo learned about processing, cleaning, and organizing data.

What's next for carbon journey

Next, we want to add more verification rules, include more data sources, and make the dashboard easier and more interactive for users. We intend to grow beyond the European market and support carbon certification on a global scale 🌍. And who knows—maybe one day CARBONJOURNEY will go even further, because sustainability should not stop at borders… or even at Earth 🚀

Built With

• cursor
• figma
• lovable
• networkx
• openapi
• pydantic
• python
• pytorch
• react
• typescript