Client seed
Your own input ("graine client") that goes into every provably fair result, so the casino can't work out outcomes on its own.
The client seed (graine client) is your part of a provably fair result. The casino usually gives you a random one by default, but you can change it to anything you want. Your dog's name works.
Why it matters
If only the casino made the randomness, it could test a bunch of server seeds ahead of time and keep one that hurts typical players. Your client seed gets mixed in after the casino has already locked in its server seed. So when it commits, it has no idea how your results will turn out.
That only works if you can actually change it and the casino can't guess it. A site that won't let you set your own client seed makes the whole system way weaker. When we review a casino, being able to edit it is a basic must.
What to do
- Put in your own client seed before you play, especially when a new server seed starts.
- Save it somewhere. You need it to verify.
- Changing it usually rotates the server seed too and resets the nonce to zero.