This seed is unique and determined in a random fashion by the Bitsler server.
Real Server seed is encrypted with algorithm sha256 and we get the Hashed seed which just useless for generating rolls. User can't get the rolls in advance that's why Bitsler give us the bogus seed.
Just Put the Seed server (Revealed) and Press the Encrypt Button. If you get the same result like Seed server (Hashed) in Bitsler then Seed is Perfect.