Who writes

ODERSA writes this course: an association, never one person alone. Every piece of content is written, read back and corrected internally; the full method is published on the Our method page. The association’s identity details appear at the foot of every page.

The typefaces

Headings are set in Source Serif 4, body text in Public Sans. Both families are embedded in the site in woff2 format: no CDN, no request to another domain to display a letter.

Source Serif 4 is published by Adobe under the SIL Open Font License, version 1.1. Public Sans is the typeface of the USWDS, the design system of the United States government: the lineage is acknowledged. It is published by the General Services Administration under the same licence.

The design

This site applies the institutional system of ODERSA, shared across the association’s whole fleet: same colours, same typefaces, same components. The trust banner at the top of every page follows the logic of the official USWDS banner, in the public domain, with the restraint of the black GOV.UK bar.

The seal and the visual identity belong to ODERSA.

The code

This site is produced by a plain Node generator: no dependency, no third party library, no CDN. It assembles the 231 pages of this site from fragments and open data.

That is not something to believe, it is something to check: open your browser’s Network tab and reload the page, and nothing is loaded from another domain. The The proof page explains how to check it in detail.

The figures

Every figure cited on this site has its line on the The sources page, with its public source and the date on which we read it: 10 sources are listed there to date. Content up to date as of August 25, 2026.

2 institutions are used for now: the OECD, for financial literacy data, and INTERPOL, for data on fraud.

The content

The text of this site is published under the CC BY 4.0 licence: copy it, translate it, print it, republish it, including modified, on the single condition that you credit ODERSA.

Some elements stay outside that licence:

• The seal and the visual identity of ODERSA. This licence does not cover them.
• The typefaces. They stay under their own licence, set out above.
• The illustrations. Each carries its own licence, shown under the image and repeated in the table below. Most are in the public domain. Those under a Creative Commons licence are reused with their credit and the link to that licence; some of them also require share-alike, meaning that a modified version of the image must stay under the same licence.

The images

Every subject image embedded in this site is freely licensed, and each one is credited beneath the image itself, where it appears. The register holds 13 of them to date. Every file is downloaded into the site: no image is called from a third party domain, which is what the trust banner promises and what can be checked in thirty seconds (see how).

The table below is not maintained by hand: it is produced when the site is built, from the register that carries the licence and the proof address of each file. It therefore cannot drift out of step with the images actually served, and an image with no known licence would not appear in it, which would mark it out as an oversight.

A Creative Commons licence that asks you to credit the author also requires the address of the licence to appear in that credit, next to the title and the author: in the table above, every licence carries the link to its own text. Public domain images require nothing.

The image folder also holds the institutional seal of ODERSA, which is not under a free licence and is not for reuse. Any image added later follows the same rule: freely licensed, checked at its source, embedded in the site, and entered in the register with its author, its licence and the address where that licence can be read.

Acknowledgements

This course draws on open public data. We thank the OECD and INTERPOL for publishing it openly: they are not partners in this project, and their publication amounts to neither endorsement nor recommendation of this site.