Pump

About

Pump is a per-step decision game. You pick a difficulty (easy / medium / hard / impossible) which sets the per-pump pop probability. Each successful pump compounds the multiplier; one pop ends the round. Cash out at any pump to lock in stake x current multiplier.

How a round plays

• Pick a difficulty. Higher difficulties pop sooner but reward each pump more.
• Place your bet; the pop point is committed to a server seed before the first pump.
• Each pump either grows the multiplier or pops the balloon. Pop ends the round.
• Cash out any time before a pop to lock in stake x current multiplier.

Provably fair

• The pop point is derived from HMAC-SHA256(server_seed, client_seed || nonce) - fixed before any pump.
• Server seed is committed before the round, revealed after you rotate.
• After rotation, the verifier reproduces the exact pop point from your seed pair + nonce.

Every round is verifiable from a server seed (revealed after rotation), your client seed, and a per-round nonce. See how it works for the full construction.