Stake Crash Verifier
Verify the fairness of your Stake.com and Stake.us Crash game multipliers using cryptographic proof
Understanding Stake Crash
Game Statistics
How It Works
HMAC-SHA256(gameHash, seed)
(2^32 / (n + 1)) × 0.99
100% Private
All verification happens entirely in your browser. Your game data never leaves your device - we don't collect, store, or transmit any information.
How to Verify Stake Crash Results
Step 1: Get the game hash and seed from Stake
Crash uses a different verification system than other Stake games. You need two pieces of data:
- Game Hash: Each crash round has a unique game hash. Find it by clicking on the crash game history or in your bet details.
- Seed: The public seed used to generate results. Stake typically uses a Bitcoin block hash as the seed, which is publicly verifiable.
Note: Crash uses a hash chain system - each game's hash is derived from the previous game's hash, creating a verifiable chain.
Step 2: Enter your data in the form above
Paste your data into the verification form:
- Enter the Game Hash for the specific crash round you want to verify
- Enter the Seed (typically a Bitcoin block hash)
The verifier calculates the crash point using Stake's exact HMAC-SHA256 algorithm and formula.
Step 3: Compare the result with the actual crash point
After clicking Verify, you'll see the calculated crash multiplier:
- The verifier displays the exact crash point (e.g., 2.45x, 1.00x, 156.78x)
- Compare this with the actual crash point shown in your game history
- The minimum crash point is always 1.00x (instant crash)
- If they match exactly, the game was provably fair
If results don't match, double-check you have the correct game hash and seed for that specific round.
Frequently Asked Questions
How does Stake Crash work and what is the house edge?
Stake Crash is a multiplayer game where a multiplier starts at 1.00x and increases until it randomly "crashes." Players must cash out before the crash to win. The game has a 99% RTP (1% house edge), which is applied through the 0.99 multiplier in the crash formula. The minimum crash point is 1.00x, meaning the game can crash instantly.
Does this verifier work for both Stake.com and Stake.us?
Yes! Both Stake.com (international) and Stake.us (US sweepstakes) use identical provably fair algorithms for Crash. This verifier works for both platforms - just enter the game hash and seed from either site.
Why does Crash use different inputs than other Stake games?
Crash is a multiplayer game where all players see the same result, unlike single-player games like Dice or Mines. It uses a hash chain system where each round's hash is derived from the previous round. The seed (typically a Bitcoin block hash) is publicly known, ensuring no one can predict or manipulate results.
What is the hash chain and how does it ensure fairness?
Stake generates millions of game hashes in advance by repeatedly hashing a starting value. Game #1 uses hash #10,000,000, game #2 uses hash #9,999,999, and so on. Since each hash is the SHA256 of the next game's hash, you can verify the entire chain. This proves games weren't manipulated after players bet, as changing any hash would break the chain.
Why doesn't my verification result match?
Common reasons for mismatched results:
- Wrong game hash: Make sure you're using the exact game hash for the specific round you want to verify.
- Wrong seed: The seed must match the one active during that game. Seeds can change periodically.
- Typos: Game hashes are long - double-check you copied the entire string without errors.
Is my data safe when using this tool?
Absolutely. All verification happens 100% client-side in your browser using JavaScript. Your game hashes and data never leave your device - we don't collect, store, or transmit any information to our servers.