To add TikTok profiles, you go to an artist page in Chartmetric and click "Update Links".
In the "Edit Data Sources" window, add the TikTok link in the following URL format:
In the example below the TikTok username in the app is @chrisrobley
therefore the TikTok URL to add is http://www.tiktok.com/@chrisrobley
Lastly, press the "Submit" button and then click the "x" to close this window.
The artist page will automatically refresh. This may take up to 30 seconds. Once complete you will see the TikTok icon is now a clickable link and you will also now see TikTok Likes and Followers displaying on the artist page.