This is the 10530th most frequent Catalan word.
publicats
"Publicats" means "published" in English.
In this sentence, 'publicats' is used as a past participle to denote that the articles were made public in the past, acting as part of the passive construction.
Els articles sobre ciència van ser publicats en una revista especialitzada.
The science articles were published in a specialized journal.
Here, 'publicats' describes the state of the videos, indicating that they are already available for the public on the speaker's channel.
Els meus vídeos nouveaux ja estan publicats al meu canal.
My new videos are already published on my channel.
In this case, 'publicats' serves as a descriptor for the books, detailing when they were made available.