Where do the prices used for scoring come from?

From a commercial end-of-day price vendor. Prices are used only to score calls: profiles will show outcomes and stats, not raw price feeds. The vendor for Proof of Call scoring isn't final.

Details

• Each resolution records a price reference: the vendor, the series and the date, plus a hash of the price snapshot it used, so the inputs are pinned.
• Calls are resolved by a nightly job after the US close, once the call's deadline has passed.
• Corporate actions such as splits are accounted for, and price targets record which price basis they use.
• Public scores will be shown only once we have the vendor's written permission to publish them.