Excellent!
What is the lottery for?
The story behind this is long

I might be implemented in the 1128 version.
Follow my idea, it's a Guess Cheque,
But the founders didn't know the password (Random generation), it encryption by AES, and store in QR code image.
Before betting end time, Some people can give this Cheque recharge(send coin to this Cheque's address), as betting.
After betting end time, if you guessed,
All This Cheque's coins will be sent to your default wallet address.
After betting end time,
If no one guessed, Cheque will unlock,
All This Cheque's coins will be sent to founders default wallet address.