You may have seen people on the Fediverse use symbols like 
or similar.
These are NOT verified users, they are just custom emojis that anyone can put after their names.
Because the Fediverse is decentralised, it doesn't have verification symbols as they require a central authority to award them.
However, if you are on Mastodon and you also have a website, you can verify yourself as the website's owner by using this tip:
@feditips I have tried this write freely (WriteAs) seems to strip some of the link out so the verification does not work properly. Unless I am doing something wrong.
You would probably have to ask @writefreely about that issue, maybe they strip tags out like you say?
@feditips @writefreely We perhaps could do with a second way to validate users, in case of issues with one method.
@feditips @writefreely
To address the issue, I think the way @writeas_dev works is to strip out parts of those tags is actually a valid (technical) reason so validation failing is an unintended consequence. But one I understand why. Hence the suggestion of an alternative way to validate.