Piero Bosio Social Web Site Personale

julian yep!
rel="canonical" tag has one and only one value.

Like https://example.com/topic/42/slug_of_title_here
where 42 is just a topic id

Utilities such as serpstat.com see the URLs example.com/topic/42/mytitle/1
and example.com/topic/42/mytitle/3 as two different pages with duplicate title meta tags.
Is it possible to fix this without blocking all posts in the thread except the first one in robots.txt?
How to get rid of this "ghosting duplication"
Asking you guys here, because Google says title duplication is harmful for SEO.