@bartosz546 , you don’t get my point. Current ServerHash is publish to chain prior any bet taking place and each of return result transaction will has the server hash written in memo. At the end of 5minutes interval, the current serverSeed and next serverHash will be reveal. If Epicdice change the ServerSeed, the hashing will not match to serverHash that publish 5 minutes earlier. All the verification can done via

https://geraintluff.github.io/sha256/
And
https://playcode.io/450370?tabs=script.js,preview,console

Why to even use transaction hash now?
A: transactionId being use as nuance, otherwise all result in the 5 minutes interval will be all same.