The four conditions are: first, Congress.gov's legislation tracker records that the bill has "Passed Senate" before August 10, 2021; second, that at least sixty Senators voted to pass the bill, as recorded in the "Actions" section of the Congress.gov legislation tracker; third, the CBO's most recent cost estimate for the bill estimates that the bill's total spending for the period 2021-2031 is strictly greater than $600 billion; and fourth, the bill must primarily address the topic of domestic infrastructure, including allocating money to at least three of the following: roads, bridges, rail, broadband, public transit, power infrastructure or water infrastructure as determined by the text of the bill. Else, the market resolves to No. Please see Rule 100.29 in the Rulebook for more information.

Clarification as of 11:30pm ET on August 5, 2021: As noted in the Rulebook, the third condition above relies on a bill's total spending, defined by the greater of the Contract Authority and Budget Authority of the bill, for 2021-2031 as reported by the CBO's most recent cost estimate for the bill.