On July 23, 2026, 584,210 markets listed on Polymarket were analyzed. Of these, 582,754 carry a written settlement rule and 1,456 carry none. 96.27% of markets are settled by machine reading: 60.31% on the official result of a scheduled contest and 30.41% on a price feed or on-chain oracle. The remaining 5.55% settle on a named published statistical series, notably airport temperatures. A single on-chain oracle operator, Chainlink, decides 118,638 markets, or 20.31% of the catalogue, more than any sports federation or exchange. Human judgement decides only 0.92% of markets, while 3.72% fall into categories where a person rather than a dataset must decide.
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