Hi, Bitcointalk community,
One of the crypto casinos is organizing a prize draw, with the one/top prize worth €52,000. Rules are pretty simple: For every 100 EUR wagered, the player gets one raffle ticket. Of course, the more tickets collected, the better your chances of winning the top prize. It’s a classic lottery-style draw, motivating the players to wager high to collect more tickets for a better chance of winning this event.
The problem is that neither it’s a live event nor a provably fair event. Therefore, some of the players might question its fairness.
In your opinion, what would be the best solution to integrate a quickly provably fair option?
The simplest solution would be to take a random digit from the hash of a particular coin whose block is yet to be mined.
For example, they can announce that the last digit of the hash of bitcoin block number #xxxxx would be the winner or something similar.
We can't really calculate the hash of a particular block in future and so it would be easy to choose a winner this way.