Provably Fair Gambling: How Verification Actually Works
Provably fair is the crypto casino industry's answer to "how do I know you are not rigging the game". It replaces trust in the operator with a cryptographic commitment you can check yourself.
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The three ingredients
The casino generates a server seed and publishes its hash before you bet. You supply a client seed (editable in most casinos). Every bet increments a nonce. The result is derived from all three - typically Result = Hash(ServerSeed + ClientSeed + Nonce) reduced to a number.
Why it cannot be manipulated
The casino committed to the server seed (via its published hash) before seeing your client seed. Changing the seed after your bet would break the hash. Changing the result would require breaking the hash function. After the seed is revealed - usually when you rotate seeds or cash out - you recompute every bet result yourself.
Crash games and blockchain anchoring
Some crash games anchor the server seed hash to a public blockchain block hash, making the commitment visible to everyone and independent of the operator's database.
Verify it yourself
Our provably fair verifier supports the common dice/HMAC schemes. Paste your seeds and nonce, pick the algorithm, and recompute the roll. If your historical bets match, the games were fair. See our verifier tool - link below.
FAQ
Is provably fair the same as Monero privacy?
No. Monero hides the payment; provably fair proves the game. They are independent layers and you get both at good XMR casinos.
Can provably fair be faked?
Only if the casino lets you verify with seeds it did not commit to in advance. Always check that the published hash predates your bets.