The Architecture of a Web 3.0 application

That and much more!

https://www.qubistry.co/marcoslozada/about-us.html see that is my thesis!

How would it guard against plagiarism? A blockchain can log the timestamp of a certain article, but there is still no proof that it was the first.

You could also accomplish the same thing (verifiable digital timestamp of a text) by emailing the article to multiple people through a major email provider like Gmail.