Rollbit Provably Fair — How to Verify Game Results
Rollbit's provably fair system allows any player to independently verify that game outcomes for original games (Crash, Dice) were not manipulated. This guide explains exactly how it works.
What Is Provably Fair Technology?
Provably fair is a cryptographic verification system used in blockchain and crypto gambling to prove that game outcomes are fair. Unlike traditional online casinos where you must trust a third-party audit, provably fair allows you to verify fairness yourself using mathematics.
The core principle:
- Before a game, the casino commits to an outcome by publishing a cryptographic hash
- The player can optionally add their own seed to influence the outcome
- The game runs and produces a result
- After the game, the full server seed is revealed
- You can hash the revealed seed yourself and verify it matches the pre-game commitment
How Rollbit Implements Provably Fair
Rollbit's provably fair implementation for Crash and Dice works as follows:
- Server seed generation: Rollbit generates a random server seed before each game
- Hash commitment: Rollbit computes SHA256(server_seed) and publishes the hash publicly
- Client seed: A client seed (from your browser or custom input) is combined with the server seed
- Outcome generation: The combined seed determines the game outcome using a deterministic algorithm
- Seed reveal: After the game, the server seed is revealed
- Verification: You can compute SHA256(revealed_seed) and confirm it matches the pre-published hash
Provably Fair vs Traditional RNG
| Feature | Provably Fair | Traditional RNG |
|---|---|---|
| Player verification | ✓ Yes — independently verifiable | ✗ No — trust-based |
| Third-party audit required | No — math proves it | Yes — audit required |
| Manipulation possible | No — cryptographically prevented | Theoretically possible |
| Transparency | Complete | Limited |
| Used by Rollbit | Crash, Dice | Slots, live casino |
How to Verify a Rollbit Result
- After playing a game on Rollbit, find the game in your bet history
- Click on the game result to view the seed information
- Note the server seed hash (published before the game) and the revealed server seed
- Use any SHA256 hash tool to compute the hash of the revealed server seed
- If the computed hash matches the pre-published hash, the result was not tampered with
Provably Fair FAQ
Is Rollbit provably fair?
Yes. Rollbit uses provably fair technology for its original games including Crash and Dice. This cryptographic system allows players to independently verify that game outcomes were not manipulated after bets were placed.
What does provably fair mean?
Provably fair means the casino cannot alter the outcome of a game after a bet is placed. Before each game, a cryptographic commitment (hash) is published. After the game, the underlying data is revealed, allowing players to verify the outcome was predetermined and unaltered.
How do I verify a Rollbit result?
To verify a Rollbit result: (1) Note the server seed hash published before the game. (2) After the game, Rollbit reveals the server seed. (3) Hash the server seed yourself and compare to the pre-published hash. If they match, the result was not tampered with.
Which Rollbit games are provably fair?
Rollbit's original games — Crash and Dice — are provably fair. Third-party casino games from providers like Pragmatic Play and Evolution Gaming use the provider's own RNG certification rather than Rollbit's provably fair system.