escrow
Yes I will set Escrow up first then start the raffle that will be best .Please do not send anything yet till Escrow is in place.
Regards Phill
How will you choose the winner?
How are we to know that you won't just make a new profile and choose yourself as the winner?
How about this, you pick a winner based on txid, or some other method. You create a sha256 hash of the data and publish it before hand. Everyone pays to the escrow agent including you for the 1B. Once it's time for the prize to be awarded you post the winner and the hashed data for verification. The escrow agent sends 1B to the winner and the total raffle amount to you.