So if the difficulty is equal or more than 300 billion you win. If it's less than 300 billion then I win. We have a deal! Winner pays 0.1 BTC to the loser.
I will accept any escrow even if for this low amount I don't think it's needed.
Beastlymac has kindly offered to do it for free! If it's ok with you let's send him the funds up front and the bet can be settled at midnight (let's say GMT) June 30, 2015.
I will escrow for free if you would like.
Thank you!