Oracle

Expiry price

For the exact minute a market expires, the oracle reads closing prices from Coinbase, Kraken, and Binance.

1. 1
   Read exchange prices

   Collect the closing price for the exact expiry minute from each available source.

2. 2
   Confirm source agreement

   At least two sources must agree within 0.5%.

3. 3
   Use the median price

   The median of the agreeing prices becomes the settlement price.

Determine the outcome

The oracle compares the settlement price with the market’s strike.

Propose the result on-chain

The keeper submits the settlement price and proposed outcome to the approved oracle contract.

The proposal remains pending during its review window. After that window closes, the market can be finalized through the Settle hub contract.