# WHAT THIS COSTS

Running this takes electricity, a machine, and a Lightning node with money parked in it. Two small deductions cover that. Both are listed here, both appear as their own line in your transaction history, and both are computed by the same code that generated this page.

## The two deductions

### 1. A percentage of winnings

Taken only when you win. If you lose a round, nothing extra is taken — you simply lost the round. This is the house's actual revenue.

### 2. Rounding down to whole satoshis

Balances are tracked in millisatoshis — thousandths of a satoshi — because the maths needs that resolution. Payouts are floored to whole satoshis and the fraction stays with the house.

The most this can ever cost you on a single payout is —. It is a rounding, not a second fee, and it is bounded by that amount every time.

## What that does to your odds

A rake changes the real return, so quoting the game's raw figure would be misleading. Both numbers are below: what the game's maths return before the deduction, and what you actually receive after it.

game | maths return | you receive
--- | --- | ---

## How you can check all of this

- Your history itemises it. Open the Wallet tab. A win shows as a `payout` line for the full amount, followed by an `operating_fee` line for the deduction. Nothing is folded into a quietly smaller number.
- The books must sum to zero. Every millisatoshi in this system is a double-entry posting. `/api/health` adds up every account in the system; it returns zero or the platform is telling you it is broken. A fee that vanished instead of being posted would show up there.
- The odds are the generator. The scratch odds tables come from the same data structure that produces outcomes — they cannot drift apart. A test runs two million plays and fails the build if the observed frequencies disagree with the published ones.
- Outcomes are sealed before you bet. The crash point comes from a seed committed before betting opens, combined with the keys of everyone who joined. Check any round yourself in the Verify tab; it recomputes on your device and asks the server only for published values.
- The code is open. AGPL-3.0. Every line of this, including the two deductions described above, is readable and auditable.

## What is not taken

- No fee to deposit.
- No fee to send sats to another player.
- No fee on losing rounds beyond the loss itself.
- No account fee, inactivity fee, or minimum balance.
- Withdrawals cost only the Lightning routing fee, which is real network cost and is capped.

The aim is for this to feel free, which means being exact about the places it is not. If you find a number on this page that does not match what your history shows, that is a bug worth reporting, and the ledger will settle the argument.

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