Can we consider accepting a participant who didn't have a forum account, but who has had an account X for at least a year, for example? Otherwise, what's the point of sharing the contest on social media?
Could you tell me what's a copper member please ?
How will people make predictions if they don't have a forum account? Could you tell me what's a copper member please ?
Or you can do the contest in two places “Bitcointalk and X” then all participants will be put in one basket and for random selection whether it's on BTT or on X the winner.
Maybe this idea is a bit strange...
but anyway the decision is yours, even if you accept new accounts to join the contest.