You can use Mastodon to add comments to your static blog engine.
@carl I like your fediverse implementation, great work. It should cut down on anonymous spam. I think a Reply/Add comment button (not a text field) next to the Load button would be nice and it can link to: https://linuxrocks.online/interact/105463655803971969?type=reply
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.