• I asked random.org to generate a random number between 0 and 100.

• After close I will compare my random number to the probability of this market shown in the UI.

• If my number is greater or equal to the probability, I will resolve to NO.

• Otherwise will resolve to YES.
  

Hash of a message that contains the random number: 348b0ed6b150e7a85b49a960c1b51e9e3042b89dfbf5edd88bfbebfd0a7012df (generated here)

Edit: The idea is that the market always shows its probability to resolve to YES. If it shows 50% there's 50% chance it will resolve to yes, 20% - 20% chance, 100% - 100% end so on.