This page has been prepared to transparently declare the sources of the numismatic data and images presented on the Numistr website and mobile applications, our terms of use, and the ethical principles of our project in this regard.

Our Data and Image Sources

Numistr places the highest importance on the accuracy, academic validity, and compliance with intellectual property rights of the content it provides. In line with this principle, our project's data infrastructure is built upon three main types of reliable sources:

1. Linked Open Data (LOD) and Academic Platforms: Our project utilizes international academic platforms designed to share numismatic data in open and standard formats. The foundation of our data integration is built upon the following reputable projects:

• Nomisma.org: A standards center and conceptual reference point for numismatic data.

• Online Coins of the Roman Empire (OCRE): A comprehensive catalog for Roman Imperial coins.

• Online Greek Coinage (greekcoinage.org): An essential digital resource focusing on ancient Greek coins.

• corpus-nummorum.eu: Another critical academic initiative providing detailed coin data, particularly for the ancient regions of Thrace and Mysia.

2. Open-Licensed Museum, Library, and University Collections: Our visual materials are sourced from the world's leading museum, library, and research networks that make their digital collections and databases available to the public. Chief among these resources are:

• The IKMK (Interaktives Münzkabinett) Network: This network, which brings together numerous museum and university collections in Germany and Austria, is a vital source of visuals and data for our project (e.g., ikmk.at, ikmk.smb.museum, www.kenom.de, www.virtuelles-muenzkabinett.de, ikmk.uni-freiburg.de).

• Major British Museums: Online archives from institutions including media.britishmuseum.org (The British Museum), hcr.ashmus.ox.ac.uk (Oxford Ashmolean Museum), and www-img.fitzmuseum.cam.ac.uk (Cambridge Fitzwilliam Museum).

• Bibliothèque nationale de France (Gallica): The rich digital library archive accessible via gallica.bnf.fr.

• Harvard Art Museums (USA): Academic collections accessed via nrs.harvard.edu.

3. Academic Publications and Catalogs: Standard numismatic catalogs (e.g., RIC, BMC, SNG) and peer-reviewed scientific publications are used as the basis for the identification and referencing of coins.

Our Principles and Copyright

Attribution: For every image and fundamental data point used on our site, attribution information for the original source is clearly stated. This both ensures we respect the intellectual property rights of the source institution and allows our users to track the data's origin (provenance).

License Compliance: All materials obtained from open-licensed sources are used in strict compliance with the terms of the respective license (e.g., providing attribution, sharing alike).

Academic Integrity and Data Quality

The primary goal of our project is to be a reliable resource built on scientific rigor. Therefore, the accuracy and transparency of the presented data are essential. When encountering information that lacks a scientific consensus or is disputed, our project's policy is to present the various existing viewpoints and academic discussions, with citations to the relevant sources, rather than asserting a single absolute truth. This approach aims to transform Numistr from a mere data catalog into a research tool that supports critical thinking.