Easiest way to add it to your Squarespace hosted site seems to be the following:
- Go to the ADN settings
- Grab the HTML for the follow-button.
- Go to your Squarespace administration panel -> Settings -> Code injection.
- Paste in the copied HTML.
- Optionally paste this
style="display:none;"in front of the closing bracket before "Follow" to hide the follow link.
- Enjoy your verified account!
Adding the script-tag doesn't appear to work, because the code injection isn't able to insert it right before the body's closing tag. But who cares, this works after all.