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.
It would require something unique and universal, like a passport, drivers license or national ID card, it depends on which country the person lives.
Works the same way as KYC on any exchange, poker site, betting site, etc, and it would be quite expensive.
Exactly. It would be more practical to handout coins proportionally to some balance of cryptocurrency a user already has (like it happened with Bitcoin Cash on exchanges)