क्लाइंट सीड
A value chosen or editable by the player that is mixed into every result, so the casino cannot precompute outcomes alone.
The client seed is the player's contribution to a provably fair result. Casinos usually generate a random one by default but let you change it to any text you like.
Why it matters
If only the casino supplied randomness, it could test many server seeds in advance and pick one that produces bad results for typical play. Because your client seed is mixed in after the casino has committed to its server seed, the casino cannot know the final results when it commits.
That only works if you can change the client seed and the casino cannot predict it. A casino that does not let you set your own client seed weakens the system considerably. In our audits, checking that the client seed is user-editable is a basic requirement.
Good practice
- Change the client seed to something of your own before playing, especially with a new server seed.
- Record it, since you need it to verify.
- Changing the client seed usually triggers a server seed rotation and resets the nonce to zero.