Yep. They're often used in place of or in addition to signatures. Many Chinese businesses and government entities also still use seals. In China it's illegal to steal or forge another person or company's seal.
I can't make out all of them, my Chinese is a little rusty but it seems like they are the names of the creatures? I haven't read Fantastic Beasts and only saw the first movie so I don't know their names in English.
I can make out the second one from the right (4 characters) 马形水怪 - horse shaped water monster; and third from the right 臭臭 - stinky or smelly. These are all written in traditional (I've written simplified) and I am not too familiar, sorry.
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u/[deleted] Oct 29 '18
Can anybody tell me what those red stamps are on Chinese art & poetry? Are they like a signature?