How do I check users old usernames via fivem license?

Hello there,
I am a moderator for a department of justice roleplay server and found out a user is using the same name as another user but we dont think its a alt and want to check the players name history via there fivem license. My buddy was apparently able to do it for another situation like this a few months ago and was wondering how you can do it.

That makes zero sence

Ask your buddy then.

Well I asked him and the site was taken down.

Create a command that uses the GetPlayerIdentifier() function: GET_PLAYER_IDENTIFIER - Docs . You should be able to use one of the identifiers to do a lookup on the respective service and obtain their previous nicknames that way. If you’re confused on how to lookup their previous nicknames that would be a good time to consult the google.