This is the best summary I could come up with:

But it also represents something bigger: an actual Threads feature from Meta that connects with decentralized social media.

I got this to work in just a few minutes on my Mastodon profile, meaning that a URL to my Threads account now has a green checkmark.

“We’ve also rolled out Threads support for rel=me links to help you verify your identity on platforms like Mastodon,” Mosseri said.

I’ll admit that I didn’t know what rel=me links were when I read Mosseri’s post, so I found a Mastodon support page that explained how they work.

If your eyes are glazing over reading all that, never fear: I found it was ultimately pretty straightforward to make my Mastodon account show a verified checkmark for my Threads profile.

But now that the company rolled out this verification feature that works on non-Threads platforms, I’m starting to believe that we’ll actually see ActivityPub support in Threads proper someday.

I'm a bot and I'm open source!