The Fidonis Resolution Integrity Index (Polymarket)

The Fidonis Resolution Integrity Index is an independent, chain-anchored measure of howoften prediction-market settlements are contested at the UMA optimistic oracle before theyfinalize. It scores resolution integrity, whether a settlement was fought, not forecastaccuracy. A higher reading means more contested settlements. This is the Polymarket edition dated 2026-07, covering March 2025 through April 2026. Overthe window, 304.6 million USD of traded volume passed through a disputed UMA resolution, 8.4percent of all UMA-resolved volume. The files include the monthly series, the contestedresolutions, dispute base rates by category and settlement size, adapter-level rates, andSHA-256 hash stamps. Fidonis holds no positions and takes no venue money. Every figure is reproducible from publicdata. Canonical edition: https://fidonis.org/integrity/polymarket/2026-07/