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Yes, you could link to the source you first uploaded them.
But I would recommend using the Identity Verfication Tool for that matter.

For that, simply add a reference to your Steemit-Account on that websites "Social Media" page, fill out the form and someone from Steemcleaners will add you to the database and remove flags (if any) and change/edit the comment.

Hi mayaoki,

In order to confirm your authorship of the content, please make a mention about Steemit or add a hyperlink to Steemit on your page:

https://majajokic.com/

You can remove this mention from your website, once we confirm the authorship.

Thank you.

More Info: Introducing Identity/Content Verification Reporting & Lookup