Provider security HMAC request signatures Timestamp drift guard (+/-5 min) Idempotency key for retries Provably fair verify endpoint The mine layout is committed before your first chip and never sent to your browser mid-round
How it works Pick how many mines are buried in the 25 stone faces. Chip a tile: a glimmer raises your multiplier, a mine brings the roof down. The whole layout is fixed before your first chip and never changes. Haul out whenever you like; clearing the face hauls out automatically.