[ryanisnan]

I don't believe your blog would get any improved SEO benefit from having canonical links to Medium - IIRC, Medium would get the juice.

Furthermore, I don't know how Google handles cross-domain canonical reporting, but if I were writing a search engine, I would treat it as highly suspect.

[TrueDuality]

You've got it backwards. There will be a header in the Medium post saying "the original source for this content is on this other blog, I'm just a repost". Google does pay attention to that and ranks the canonical source higher.

[ryanisnan]

I believe they were discussing how Medium does not allow canonical links. I am aware of how canonical links work.