Hi dhama. 
I will change of opinion regarding the initial identification in the works in the challenge; this because Tony played in a very important point. THE VOTE FRIEND.

He/she/you had not thought about that possibility, the one of the vote friend. 
It is for that that you/they appear members that rarely appear day by day in the in the beginning of the votings, those they are the: THE FRIEND´S VOTES.
 
Therefore, now, I agree in not having an identification before the end of the voting. 
He/she has another identification possibility, when the work be not identified with an usual signature... --> the style exists, and that will easily be able to identify the author. 
 
Hugs.