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Aura uses an instant off-chain order book with batched on-chain Clearinghouse settlement. Prices represent probabilities from 0% to 100%. Orders appear in the book immediately; a match is provisional until funding and settlement finish. This replaces Aura’s legacy model where each order and cancellation was its own on-chain CLOB transaction.

Buying outcome shares

1

Choose a market and outcome

Select a market, then choose YES or NO.
2

Choose how to execute

Enter a spend or share quantity. Aura previews the current depth, fees, average price, worst price and any unfilled remainder. The order takes available liquidity immediately and cancels anything it cannot fill.
3

Review the live quote

A quote is a point-in-time simulation, not a reserved fill. Review its expiry, fees, price impact, required collateral and warnings.
4

Confirm

The embedded wallet authorizes the bounded action inside Aura’s enclave; seed material and reusable signatures never leave custody.

Selling outcome shares

Open the Sell tab, choose YES or NO shares and select market/IOC or limit/GTC execution. Aura reserves only the sellable shares required by an open order. A pending settlement obligation remains unavailable until it settles or unwinds.

What “instant” means

The UI can show an accepted order or provisional match immediately. Final Clearinghouse settlement follows asynchronously. Funding failure, an unwind or a chain reorg can correct provisional state, so keep the order/account view open until settlement is confirmed. Aura reconciles open orders, holds, positions and settlement events so an order does not disappear before its replacement position or correction is visible.

Open orders and cancellation

You can cancel the unfilled remainder of an open limit order. A fill can race a cancellation; in that case the filled portion remains a trade and only the remaining quantity cancels. Market makers can explicitly arm a dead-man switch that cancels open orders if its authenticated heartbeat stops. Closing or sleeping the active browser tab can trigger it, and the app warns before arming. Aura creates one-use exact cancellations at timeout rather than storing a reusable pre-signed cancel-all.

Fees, spread and slippage

The current trading fee and denominator are published by Aura’s canonical protocol configuration. Check the quote shown before confirming rather than relying on a hard-coded percentage.
  • Spread is the gap between the best bid and ask.
  • Slippage occurs when an order consumes several price levels.
  • Price improvement means execution was better than your limit or bound.
Creator, referral, liquidity and treasury accounting comes from settled fills. Provisional matches do not count as final earnings.

Potential returns

After resolution and its dispute/settlement timing, winnings become claimable or are paid by Aura’s payout automation. The market lifecycle shows when that state is reached.

Parlays

Parlays combine several market outcomes into one all-or-nothing payout. Their odds and limits are a separate product surface; do not infer a parlay price by multiplying stale book values. Review the current parlay quote before confirming.

TL;DR

  • Immediate off-chain order book; batched Clearinghouse settlement.
  • Market/IOC orders take available liquidity; limit/GTC remainders can rest.
  • BUY locks collateral and SELL reserves shares/obligations.
  • Matches are provisional until settlement confirms.
  • Current fees and limits come from protocol configuration and the live quote.
Last modified on August 11, 2026