What the primary record establishes

For Polymarket markets using the UMA Optimistic Oracle, a proposed outcome enters a two-hour challenge period. An undisputed proposal is accepted. A dispute triggers a second round, and a second dispute escalates to UMA voting. Polymarket resolution documentation ↗

What the distinction changes

If the official source releases a result at 14:00 and someone proposes the outcome at 14:20, the ordinary window ends around 16:20 absent a challenge. A disputed proposal follows a different timeline.

What to check before drawing a conclusion

Record the source publication, proposal, any dispute and final resolution as distinct events. The specific market defines its authoritative source and exceptional cases. Other Polymarket products may use different resolution mechanisms.