Hi Nora, happy to see you posted your first article! I read it in English translation using deepl.com (danke @flugschwein !), otherwise my German would have been overwhelmed :)

Unlike the bitcoin blockchain or the ethereum one, steem is actually able to store the administrative papers because it has been designed as a "blockchain + integrated document management system". If you go for instance to steemworld.org, you can see the actual content of your article is on the blockchain (not just a hash value)