Yes. You're welcome to use an "artist name" (i.e. pseudonym) on your Saatchi Art profile rather than your legal name.
If you choose to use an artist name, we won’t reveal your legal name to the public at any time. However, in order for Saatchi Art to be able to verify legal names and identities, all artists must upload a government-issued photo ID such as a driver license or passport.
To change your public profile name:
Step 1 – Hover over your name on the right of the top navigation menu and select Account Information (see below). You'll be directed to your Account Information Page
Step 2 – On the Account Information page to the right of your profile picture, enter your desired public profile name in the First and Last name fields.