Why the rights reservation needs reading precisely
The crawl rules here contain a reservation of rights, and reading it carelessly in either direction leads somewhere wrong.
It is headed Nutzungsvorbehalt - reservation of use - and its content is an AI training opt-out. It names model training crawlers individually and disallows them from the entire site. What it does not do is prohibit crawling generally: the rules for ordinary crawlers remain narrow, covering technical paths rather than editorial content.
So the honest reading has two parts. Collecting catalogue metadata for analysis is not what the reservation addresses, and we do it within the general rules. Using this material as training data for a model is exactly what the reservation addresses, and we will not do it - for ourselves or for a client who tells us that is the purpose.
That distinction is worth stating because it cuts both ways. Treating the reservation as a total prohibition would write off a legitimate source; treating it as decorative would ignore a clearly expressed position from a public broadcaster. Neither is acceptable.
Beyond that, the analytical value is the federated structure and the availability windows - the same time-limited catalogue problem that public broadcasters everywhere present, with an extra dimension because nine institutions feed the same shelf.