lichess.org
Donate

how can lichess know for sure that the person that they give the GM in front of their name is actually that or a gm?

could not you fake that you were that person, how can lichess verify who they are
They get IDs and FIDE memberships etc sent to them by email, also verify through other places where they are already verified (such as, I believe chess.com) that they are who they say they are.

This topic has been archived and can no longer be replied to.