This guide walks you through placing a bet in the app. For a first-time setup (wallet, USDC, devnet), see the Quickstart first.
Find the right market
Open Markets. Each card shows the question, the current pool split, the total staked, the close time, and the status badge.
Only markets in the Betting phase accept new bets. The status badge tells you at a glance.
Pick a side and an amount
Click into a market. The bet panel shows:
- YesNo markets: YES and NO buttons.
- MultiOutcome markets: one button per option (
2to4options).
Pick a side. Enter the amount in USDC (minimum $1). The app shows a live preview of the two fees and your projected payout.
Confirm the transaction
Click Bet and approve the transaction in your wallet. The app walks through six stages:
| Stage | What's happening |
|---|---|
| Validating | Confirms the market is still open |
| Preparing | Fetches current fees and encryption key |
| Encrypting | Your browser scrambles your side with a fresh key |
| Submitting | Transaction lands on Solana (≈1 second) |
| Awaiting MPC | Arcium updates the pool with your encrypted bet (≈10 seconds) |
| Finalizing | Your position appears in Positions |
You can leave the page after Submitting - the app picks up when you return.
Warning: A key is saved to your browser's local storage so you can see your own side later. Clearing browser data removes it - but your bet and payout are safe. See FAQ.
See your position
Open the Positions tab. Your bet shows your side (visible to you only), stake, locked-in odds, and current market status.
You can place multiple bets on the same market. Each becomes a separate position with its own key.
What's next
- Claim payout - what to do when the market resolves.
- Market lifecycle - the full timeline from bet to claim.
- Dispute resolution - how to flag a bad result.