I am admittedly still working out the platform but I thought if you are claiming identity then don't you need to post a dated tagged image?

I am probably missing the history of the account and if so ignore me but I have already found two possible accounts going by the same name for someone on YouTube I am trying to find.

I get the situation is different than say a Twitter verified account but is there any tips on finding out if someone who has accounts on other platforms has declared their account is who they say they are?