Every bet has two fees deducted up front. Whatever’s left enters the pool and earns you a payout if you win.
Fee breakdown
| Fee | Typical | Max | Goes to |
|---|
| Protocol fee | 0.5% | 1% | Protocol treasury |
| Market-creator fee | 1.5% | 5% | Market creator |
2% per bet. For comparison, traditional sportsbooks charge 5–10%.
The app shows you the exact fees before you confirm. Always check there - rates can be updated by the protocol.
How odds work
Each side has a pool - the running total of USDC bet on that option. Your potential payout comes from the ratio of the total pool to the side you bet on:
entryOdds = totalPool / yourSidePool
$3,000 on YES, $1,000 on NO - total pool $4,000.
- Bet YES →
4000 / 3000 = 1.33× your net stake if YES wins.
- Bet NO →
4000 / 1000 = 4× your net stake if NO wins.
Your entryOdds are locked in the moment your bet lands. Bets that come in after yours don’t change your payout.
Settlement payout
When the market closes, Arcium decrypts every position and the protocol computes a final payout ratio to ensure total payouts don’t exceed the vault. In normal markets this is close to 1. In edge cases (imbalanced pools, high fees), it can be slightly lower.
The app shows your projected payout in the Positions tab. When you claim, the protocol pays out automatically.
Creator bond
Opening a market requires a USDC bond of at least $20. The bond is held until resolution and returned - with accumulated creator fees - when the market closes cleanly.
The bond prevents market spam and gives the creator a reason to resolve correctly. It’s collateral, not a fee.
What’s next
