Licence (ODbL)

Open Database Licence (ODbL)

All datasets made publicly available throughOpenChemFacts are distributed under the Open Data Commons Open Database Licence (ODbL).

The ODbL, developed and maintained by the Open Knowledge Foundation, promotes the free use and sharing of databases while ensuring that contributors and the community receive proper recognition.

The full text of the license is available at : https://opendatacommons.org/licenses/odbl/1-0/

The ODbL applies only to datasets that are publicly released through OpenChemFacts.

Some source datasets, proprietary data, third-party resources, or computational workflows used to generate indicators may be subject to their own terms and are not necessarily distributed under ODbL.

Such non-public resources are notably used to provide value-added services through OpenChemFacts founder operating firm Lumens.

What you can do

Under the ODbL, you are free to:

• Share — copy, distribute and use the database

• Create — produce works from the database

• Adapt — modify, transform and build upon the database

These freedoms apply for any purpose, including commercial use.

What you must respect

When using OpenChemFacts data, you must comply with the following obligations:

1. Attribution You must attribute OpenChemFacts as the source of the data. Attribution should be reasonable and clearly visible, for example by mentioning “Data © OpenChemFacts contributors, licensed under ODbL”.

2. Share-Alike If you publicly share a modified version of the database, or a database derived from it, you must distribute it under the same ODbL license.

3. Keep the Data Open If you use the database in a way that results in a publicly accessible database or service, you must ensure that users can access the underlying data under ODbL terms.

Produced Works vs. Derived Databases

The ODbL distinguishes between:

• Produced Works (e.g. analyses, visualizations, reports, or applications built using the data) : These are not required to be licensed under ODbL, as long as the underlying database itself is not redistributed.

• Derivative Databases (e.g. enriched, filtered, or merged datasets) : These must be shared under the ODbL if they are made publicly available.

Why ODbL ?

The ODbL ensures that OpenChemFacts data remains:

• Open and reusable

• Protected against proprietary enclosure

• Enriched by community contributions

By adopting the ODbL, OpenChemFacts aims to foster a sustainable and collaborative ecosystem for environmental chemistry and life cycle assessment.