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Open Fairness

Fairness JB.COM: A Transparent Game Foundation Where the Outcome Is Set Before the Round Starts

Fairness JB.COM explains the fairness system, in which the round’s outcome is tied to a pre-generated hash chain and can be verified through technical means. The Crash multiplier exists before a given round is launched, and the algorithm allows the revealed result to be matched against the original data. This model protects the game from manual alteration of the result after a bet has been placed.

JB.COM’s Fair Game Model With No Post-Bet Result Calculation

JB.COM positions itself as a fair and impartial prediction and guessing platform, where dishonest factors are meant to be excluded. In practice, this means that:

  • The outcome of each round is not calculated after the bet has been placed;
  • The Crash number exists before the round is launched, in the form of an encrypted hash;
  • After the round ends, the player can verify that the result matches the original hash.

JB.COM’s Chain of 10 Million Hashes and Reverse Order of Disclosure

Before the game begins, a chain of 10 million hashes is created for Crash. Each hash corresponds to a separate round and is linked to a specific Crash multiplier. Results are revealed in reverse order: the last element of the chain is used first, while the first is revealed last. This structure demonstrates that the sequence was prepared in advance, and the connection between hashes can be verified using SHA256.

JB.COM Verification via SHA256 and the Integrity Check Value

The integrity check value is a control value that allows verification that the hash chain has not been altered after the result was published. The scheme works as follows: if SHA256 is applied to a known round hash, the resulting value should match the previous hash in the chain. If there is a match, the chain was formed in advance and without subsequent interference.

The verification is performed openly: the player can independently reproduce the calculation and confirm that the hash before and after the round was not altered.

Illustration of JB.COM's provably fair security featuring chain locks and integrity-check symbols.

JB.COM’s Multiplier Formula and the Probability of the Minimum Outcome

The round multiplier is calculated using a fixed algorithm:

  1. The first 13 hexadecimal characters are taken from the round hash;
  2. The characters are converted into a numerical value X between 0 and 1 by dividing by 16^13;
  3. The formula 99 / (1 – X) is then applied;
  4. If the resulting value is below 100, it is forcibly set to 100;
  5. The final result is rounded to a whole number and divided by 100, so a value of 170 becomes a multiplier of 1.70.

The minimum possible outcome is 1.00x – this occurs when the formula produces a value below 100 prior to the forced adjustment.

Frequently Asked Questions

No. The round hash is recorded before betting begins, and after the round ends, the player can verify that the result matches the declared hash.

It is a control value that confirms the hash chain has not been altered after publication – an important element in verifying the fairness of each round.

The chain contains 10 million hashes, each corresponding to a separate Crash round.

It is enough to know the hash of a completed round and the revealed server seed – by applying SHA256 to the seed, the player can match the result against the previous hash in the chain.

When the formula 99 / (1 – X) produces a value below 100, it is automatically set to 100, which, after dividing by 100, results in a multiplier of 1.00x.

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