I would have a lot more faith in lottery outcomes, if they used publicly verifiable unpredictable randomness.
For instance, for a lottery drawing scheduled at time t, take the last valid bitcoin block hash with a timestamp less than t-3600, and apply some memory hard key derivation function that takes an hour to compute.
For instance, for a lottery drawing scheduled at time t, take the last valid bitcoin block hash with a timestamp less than t-3600, and apply some memory hard key derivation function that takes an hour to compute.