Provably Fair: How the Cryptographic Game Fairness Check Works at TowerX

How the Cryptographic Game Fairness Check Works at TowerX

Provably fair is not a marketing slogan, but a specific cryptographic technique that allows players to independently verify that the outcome of each round in TowerXGame is generated fairly and cannot be tampered with ‘along the way’. This means one simple thing: if a player has placed a bet of, say, ₹100, the final result of the round and the possible payout in rupees are calculated on top of a predetermined random number that can be verified by the player themselves — without having to trust anyone else’s word. This article explains how the verification works, what algorithms it is based on, and what exactly the player sees and controls when they say ‘verified — fair’.

What Makes a Game ‘Provably Fair’

The basic idea of provably fair is this: before a series of rounds begins, the server generates a secret value — the server seed — and publishes its cryptographic fingerprint (hash). The player, for their part, sets the client seed (it can be left as default or edited). For each round, the nonce counter is increased by one. The three values — server seed, client seed and nonce — are combined and passed through a cryptographic function that converts them into a deterministic but unpredictable random number. This number determines the outcome of a particular TowerX round. This three-ingredient approach is an industry standard: it makes the result repeatable for verification and impossible to tamper with until the server seed is revealed.

The cryptographic Foundation of TowerX: Hash and HMAC

To guarantee the immutability and authenticity of the source data, provably fair checks use two building blocks of modern cryptography:

  • Cryptographic hash functions of the SHA-2 family (e.g., SHA-256). A hash is a ‘fingerprint’ of data of a fixed length; the slightest change in the input completely changes the fingerprint. The server seed hash is published in advance: no one can see the original seed, but everyone can verify that after the round, the seed whose fingerprint was shown before the game is revealed.
  • HMAC (Keyed-Hash Message Authentication Code) is a ‘signed’ hash that protects the ‘message + key’ combination from tampering attempts. In game verification, HMAC is convenient to use to obtain the final pseudo-random value from the bundle (server seed as the key) + (client seed and nonce as the message). This approach is resistant to typical attacks and is widely described in standards.

The combination of SHA-256 and HMAC-SHA256 is good because it is impossible to predict the result before the bet, and verification after the bet is trivial: anyone who has three values (server seed — already disclosed, client seed — known to the player, nonce — round counter) will recreate the same hash and verify that it matches the one used by the game.

Step by Step: How Integrity Verification Works in TowerX

Step 1. Fixing Future Randomness

Before the start of a series of rounds, Tower X Game publishes the server seed hash. The seed itself is hidden, but its ‘fingerprint’ is already visible, which means that after disclosure, it will be impossible to ‘rewrite the past’ — any other seed would give a different hash.

Step 2. Selecting the Client Seed

The player sees their client seed and, if they wish, can change it, adding ‘their own’ randomness to the calculation. This is important psychologically and mathematically: the operator does not control the entire input, only their own part.

Step 3. Numbering Rounds

For the first bet, nonce = 0 is taken, then 1, 2, 3… This ensures that two different rounds never use the same trio (server seed, client seed, nonce).

Step 4. Generating the Result

The game calculates HMAC-SHA256(server seed, client seed ∥ nonce). The resulting 256-bit code is converted into a number in the required range — this is what determines the outcome of TowerX in a particular round. The details of the conversion depend on the mechanics of the game (e.g., how a multiplier is extracted from the ‘raw’ number or how safe/dangerous cells are placed), but the idea itself remains the same: a deterministic mapping of the hash to the result.

Step 5. Calculation in Rupees

The winnings for a bet in ₹ equivalent are obtained by applying the game rule to the result of step 4. If, for example, a player placed a bet of ₹100 and stopped the round at a multiplier of 3.5, the payout would be ₹350 — and its source can be traced back to a specific hash combination.

Step 6. Disclosure of the Server Seed

When the series of rounds on the current server seed is complete, TowerX discloses the seed itself. The player compares its hash with the one published earlier — and makes sure that the seed has not been changed during the game.

Step 7. Repeatability of Verification

With the disclosed server seed, client seed, round number/nonce, the player can endlessly reproduce the calculations, obtain the same hashes and the same game results — and thus verify the fairness of each round.

Why is This Scheme Beneficial to the Player?

There are several reasons:

  • Independent verification. You can double-check the results for the entire evening — without contacting support or a third-party intermediary.
  • Non-substitutable history. Publishing the hash in advance excludes the possibility of retroactively ‘replacing’ the seed.
  • Transparency of bets in ₹. Any payment in rupees can be traced back to a specific hash; the calculation is easy to reproduce.
  • No ‘hidden tumblers’. The operator cannot rig a single round without changing the seed, and this will be immediately revealed during verification.
  • Player control. The ability to change the client seed adds an independent source of randomness to the formula.

Conclusion

TowerX Game implements provably fair as a technology that gives the player control over the source of randomness itself. Cryptographic standards — SHA-256 and HMAC-SHA256 — ensure the non-substitutability and reproducibility of the result, the publication of the server seed hash in advance ‘seals’ future randomness, and the disclosure of the seed afterwards makes verification transparent. All this turns the phrase ‘fairness confirmed’ from a promise into a simple, repeatable procedure that any player from India can perform themselves — and see how their bets in ₹ are transformed into results on the screen exactly as the mathematics of the game dictates.