Mastodon includes a system for verifying website ownership. This is useful if you want to prove your identity.
✅ To verify site ownership, go to Edit Profile > Appearance > Profile Metadata. Add your website address (including https://) to the metadata, then paste the verification code into your website's own code, then click "Save Changes".
If you've done this correctly, the address on your profile metadata will turn green with a tick next to it.