Don't trust. Verify.
Every coin flip and wheel spin on Cryptoflip is provably fair, which means you can independently verify the outcome instead of trusting the house. You are not taking anyone’s word for it, you are checking the math yourself.
Before a round starts, the server generates a secret server seed and shows you its SHA-256 hash. That hash is a fingerprint that proves the seed was fixed in advance without revealing it. A client seed is combined with it, and a nonce distinguishes rounds that would otherwise calculate the same way.
A coin flip goes one step further: both players’ account IDs are hashed in alongside the seeds. On most sites every input is fixed the moment a game is created, so the outcome is already decided before anyone joins and is identical no matter which opponent turns up. Binding both accounts in means the same creator, the same seeds and the same nonce produce a different flip against a different opponent. The wheel keys an HMAC on the server seed instead, over your client seed and nonce.
After the round resolves, the real server seed is revealed. You can confirm it hashes to the commitment you were shown up front, then recompute the result yourself and check it matches. The verifier on this page runs that maths in your own browser and never asks our server for the answer, because a tool that checks with the house verifies nothing.
What this proves, and what it does not
Provably fair proves one specific thing: the outcome was fixed before you bet and nobody changed it afterwards. That is worth having, because it is the failure everyone reasonably suspects of an online casino and it is otherwise impossible to rule out from the outside.
It does not mean the odds favour you. Original charges 5% of the pot and Wheel charges a 10% edge on every wager, both stated openly, and verification confirms those numbers were applied honestly rather than that they are not there. A verified game is an honest game, not a winnable one. Anyone advertising provably fair as though it were an edge for the player is selling you something.
It also proves nothing about rounds you have not checked. The point of publishing the seeds is that you do not have to take our word for any individual result, so if a specific flip or spin looks wrong to you, verify that one rather than assuming either way.
Rotate your client seed
Your client seed is the half of the input you control, and you can change it whenever you like. Rotating it costs nothing and gives you a clean verification point going forward. On Wheel, revealing the active server seed to check past spins automatically starts a fresh pair, so verifying never leaves later rounds predictable.
18+ only. Gamble responsibly. GamblingTherapy.org