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Rainbet uses its own provably-fair design rather than copying Stake. The hash function and message format change per game, and Rainbet draws unbiased integers by rejection sampling instead of Stake's float method. Getting any of that wrong gives the wrong answer - this verifier implements Rainbet's actual per-game scheme so the results match.
Runs entirely in your browser - your seeds never leave this device.
Provably fair verification lets anyone independently recompute a game's result from its server seed, client seed and nonce - confirming the casino could not have altered the outcome after the bet. Browse all casinos & games
In-depth provably-fair checkers and payout math for Rainbet's most-played games.
Rainbet builds each result from the message clientSeed:nonce:game. The hash function depends on the game: Dice, Limbo, Rock Paper Scissors, Dragon Tower and Plinko use SHA-256, while Mines and Keno use SHA-512 for the larger pool of values they need.
Rather than turning bytes into 0-to-1 floats, Rainbet reads the hash as integers and uses rejection sampling - discarding values that fall in the biased tail of the range - so every outcome is uniformly distributed with no rounding skew. Those clean integers then index into a card, a tile or a dice value.
The server seed behind every result is committed in advance, so Rainbet can't change an outcome once you've bet. Rotate your seed pair to reveal the server seed and confirm any past Rainbet round above.
Rainbet's nine provably-fair games - Dice, Mines, Plinko, Keno, Blackjack, Limbo, Dragon Tower, Rock Paper Scissors and War - each follow this per-game hashing rule. The verifier applies the correct hash and message for whichever you select, which is why generic Stake-style checkers fail on Rainbet.
No. Rainbet hashes per game - SHA-256 for Dice, Limbo, RPS, Dragon Tower and Plinko, SHA-512 for Mines and Keno - over clientSeed:nonce:game, and uses rejection sampling for unbiased integers. A generic Stake verifier will not reproduce Rainbet results.
Because both the hash function and the message format differ from Stake, and the integer-sampling step is different too. This tool encodes Rainbet's exact per-game logic, so the output matches your bet history.
Yes. Each result is bound to a pre-committed server seed, your client seed and the nonce. Reveal the server seed by rotating seeds and re-derive the outcome here to confirm fairness.
No. Both draw from a SHA-512 hash of a server seed that stays hidden until you rotate seeds. Nothing can know the layout in advance, so any predictor is a scam.
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18+ only · Gamble responsibly · This tool verifies past results and cannot predict future outcomes.
