Tag to indicate respective owners of OCs?

NgKQ
Twinkling Balloon - Took part in the 2021 community collab.
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab
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Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Artist -

Multifandom Man
I’m not sure if this was asked before, but I wanted to propose a tag to indicate the owners of their respective OCs in every image.
 
My proposal is something like (for example: the OC in the pic belongs to me):  
oc owner:ngkq
 
Let me know if this was ever discussed before
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