Solved

[1LoL1]

Clientsided:

Only the player can see his own nickchanges

Serversided:

Only the players who can look in the serversided files can see every nickchange

I really don't understand what do you mean

He means, in server sided script you can look at all changed nickname

In client sided you can see only your own changed nickname not all

Ah that must be in server-side ye?

[Bonus]

Clientsided:

If a player, whoever he is, joins to your server and changes his nick, then he gets a clientsided file, where the other clientsided files are getting downloaded. There he can see ONLY his own nickchanges.

Serversided:

The folder where you place your serversided files and got your meta.xml.

There is a folder with the name logs.

If a player on your server, doesn't matter who he is, does a nickchange, then there will be a file with the name logs.log in the folder logs.

There is every nickchange on the server listed.

But the player, who doesnt have access to the serversided files, can't see this logs.log, because its serversided, not clientsided.

[1LoL1]

Anyway thanks for help i put in server-side.