I was having a kind of thought experiment...

Let's say that you create a new crypto-currency. Before the creation of the first genesis block you create 25 billion wallets with each 1 coin in it. The purpose of this would be that anyone on earth, could claim his 1 coin at anytime.

My question:

How would you prevent that someone claims more than 1 wallet?


PS: I didn't incorporate more details because this is not necessary for the question at hand.