I've added support for fediverse author attribution in Pagecord. Set this field in your blog settings, then all your posts will contain a meta tag that Mastodon (and presumably other Fediverse accounts) will use to attribute you when people share a link to the post. 

It's pretty neat. Mastodon wrote a detailed blog post about it last year.

I've also added support for `rel=me` so if you add a Mastodon social link to your blog, Mastodon will verify that your Pagecord is indeed you.