How do I confirm my site on Google Webmaster, Bing Webmaster, Pinterest and other sites?
So you need to prove you have ownership of your site to another site. That website provides you a unique code. Put it on your website.
The Metadata Tool is your answer.
Sample Code from a Third Party
Select the record with the metadata title of /
This is the metadata record for your homepage.
Enter the unique meta header name / value pair provided by the third-party site.
Scroll to the bottom of the page to the Meta Header Name / Value.
Type the header name.
From the sample code, enter the name content that was between the ". (In red below)
<meta name="p:domain-verify" value="4cda25uaa8r592084jasldfj808"/>
Enter the header value.
Clear site cache or wait.
Either clear your website's cache or wait up to 4 hours for the update to take effect.
Confirm site ownership on the third-party site
Return to the website that requested you add the verification code to complete confirmation.
If you have any questions, please contact your project manager.