Provably fair play in Tonza Originals exists so that nobody has to take the operator's word for a result. Any completed round can be rebuilt from its inputs and compared against what the game showed. The check takes a couple of minutes, but part of the evidence has to be captured before you play — it cannot be reconstructed afterwards.
The three inputs behind every round
| Input | Set by | Visible |
|---|---|---|
| Server seed | the server | hash before the round, seed after rotation |
| Client seed | you | always |
| Nonce (round counter) | the counter | always, increments by one per round |
The security comes from the order of events. The server publishes the hash of its seed before it knows anything about your bet. A hash is one-way: it reveals nothing about the seed, yet once the seed is disclosed anyone can confirm the hash came from it. Swapping the seed after the fact is therefore impossible without breaking that match.
Step 1. Save the hash before you play
Open the fairness panel on the Provably Fair page and copy the current server seed hash into a note or a file. This is the commitment being made to you. Verifying a round without having stored the hash in advance leaves you trusting that the hash shown later was the original one — the exact assumption the system is designed to remove.
Step 2. Set your own client seed
You can leave the generated client seed in place, but entering your own string is better. It is the one input the server could not have anticipated. Record it exactly as typed: capitalisation and stray spaces change the result.
Step 3. Play, and note the nonce
Each round increments the nonce within the current seed pair. To verify a specific round you need its number, which appears in the history alongside the outcome. Reading it from the history is more reliable than counting rounds yourself.
Step 4. Rotate the seed to unlock disclosure
An active server seed is never revealed — if it were, future outcomes for that seed pair could be computed in advance. Disclosure happens on rotation, available as the seed change control in the panel. After rotating, the server hands over the previous server seed in plain form, issues the hash of the new one, and the nonce restarts.
This is where most failed verification attempts stop: the player looks for the seed without rotating first and finds only a hash.
Step 5. Match the hash
Run the revealed server seed through the same hash function the verification page uses. The output must match the string you saved in step one, character for character. A match confirms the server played the round with the seed it committed to. A mismatch makes any further comparison pointless and is worth raising with support immediately.
Step 6. Recompute the outcome
With all three values in hand, enter the server seed, the client seed and the nonce into the calculator on Provably Fair. It repeats the computation and returns the outcome, which must be identical to what the game displayed — the side of the coin in Coin Flip, the number in roulette, the mine layout, the ball path in Plinko.
The principle is the same across the set: three strings deterministically produce a number, and that number maps onto the game board. Identical inputs always yield identical output, which is precisely why an independent recomputation is possible at all.
When the numbers do not line up
- Check the nonce. An off-by-one is the single most common cause of a mismatch.
- Check the client seed. Use the one that was active during the round, not the current one — changing it starts a new series.
- Check the copy-paste. A leading space or a truncated character produces a completely different hash.
- Check the series. Rounds played after a rotation belong to the new server seed and will never verify against the old one.
If every input is right and the outcome still differs, capture screenshots and contact support: the on-site chat, @TonzaSupportBot, or [email protected].
What the check proves — and what it does not
It proves that the outcome was fixed by inputs committed before your stake and left unchanged after it. It does not alter the stated RTP: 98% for Coin Flip and Mines, 97% for Plinko, 97.3% for roulette, 99.5% for blackjack. The house edge lives in the payout structure, and verification leaves it exactly where it is. It also says nothing about future rounds — a revealed seed is spent, and the hash of the next one discloses nothing.
