What does provably fair mean?

The site commits to a result before you bet by publishing a hashed server seed; afterwards it reveals the seed so you can confirm nothing changed.

How do I verify a round?

Combine the revealed server seed with your client seed and nonce in the site's verifier and check it matches the published hash and outcome.

Is CSGOFast provably fair?

Yes — across its Fast, Double, Crash, Cases and Roulette modes-explained.

Best sites / Provably Fair

Trust

Provably fair, explained

How to confirm a CS2 gambling round was not rigged before you trust a site.

Provably fair is a cryptographic method that lets you verify each round was decided before you bet. The site publishes a hash of a secret server seed; after the round it reveals the seed so you can recompute the result. It is the single most important trust signal — more important than any site marketing.

Verification steps

Note the published server seed hash before betting.
Set or note your client seed.
After the round, take the revealed server seed.
Hash it and confirm it matches the pre-round hash.
Combine server seed + client seed + nonce to reproduce the outcome.

Every site we feature documents a provably-fair system; CSGOFast applies it across all five modes-explained.

FAQ

What does provably fair mean?: The site commits to a result before you bet by publishing a hashed server seed; afterwards it reveals the seed so you can confirm nothing changed.
How do I verify a round?: Combine the revealed server seed with your client seed and nonce in the site's verifier and check it matches the published hash and outcome.
Is CSGOFast provably fair?: Yes — across its Fast, Double, Crash, Cases and Roulette modes-explained.