Provably Fair Verification Lab
Independently verify any crypto casino bet using cryptographic proof. Paste your seeds, select your casino and game, and let the math confirm your results.
📚 How Provably Fair Works
Provably fair is a cryptographic system that lets you independently verify every bet outcome. Unlike traditional casinos where you must trust the house, crypto casinos using provably fair technology allow you to mathematically prove that results were not manipulated.
Seeds Are Set
The casino generates a server seed and shows you its hash. You set your own client seed. A nonce counts each bet.
Result Is Computed
The seeds and nonce are combined using HMAC-SHA256 or HMAC-SHA512 to produce a hash, which determines the game outcome.
You Verify
After rotating your seeds, the server seed is revealed. You can recreate the hash and confirm the result matches — no trust required.
Supported Casinos & Algorithms
Supported Game Types
- Dice — Roll 0.00 to 100.00, verify the exact number
- Limbo — Multiplier result (1.00x+), verify the crash point
- Crash — Game crash multiplier using hash chains
- Coin Flip — Heads or Tails outcome
- Mines — Mine positions on the grid
- Plinko — Ball path direction at each peg row