Here is the thing.
I am free lottery. You must guess two numbers from 0-9. The numbers can be the same. Chances are 1/100 you guess the numbers, which I have randomly selected. But, to prove I am not cheating, I'll give you a sha256 encoded key.
Here is the key: 5c230ade3afeeb006b9388af63de116243815ab5f25faf1339a969123a56552b
Tomorrow I will give you results and you will be able to check message via many online tools which encode to sha256. Here is one for example:
http://www.xorbin.com/tools/sha256-hash-calculatorWell, happy playing.