Is SatoshiMines provably fair?
Fairness is the whole point of a crypto Mines game. Here is exactly how SatoshiMines makes sure no player — and no operator — can change the outcome of a round once it has started.
Mines are placed before you play
The instant a round begins, the positions of every mine on the 5×5 grid are chosen with a cryptographically secure random number generator. This happens before you reveal a single tile. Because the board is fixed up front, nothing you click during the round can move a mine onto a tile you were about to pick, and the operator cannot move one either.
A fixed, published 1% house edge
Every payout is reduced by the same flat 1% house edge — no more on high-risk boards, no less on safe ones. Because the edge is a constant baked into the multiplier formula, your expected return is identical on every round regardless of how many mines you choose.
A transparent payout formula
After you reveal k safe tiles on a grid of N = 25 tiles with m mines, your multiplier is:
multiplier = (1 − 0.01) × Π (N − i) ÷ (N − m − i), for i = 0 … k − 1The formula is the same for everyone, so two players who reveal the same number of tiles with the same number of mines always see the same multiplier. There is no hidden adjustment based on your balance, your history, or how much you have won.
See it for yourself
Read the full rules, then try a round and watch the multiplier track the formula tile by tile.