Sources, in ranked order. (1) The league's official published results and standings. (2) The Associated Press. (3) ESPN.
Transport is not the source. The results feed Major League Markets reads to build the ledger is a means of delivery. Before every official close, each new result is checked against a second, independent source, and the outcome of that check is published with the close.
Conflicts. If sources disagree, the higher-ranked source governs. If no ranked source has posted a final result by the close, the result waits for the next close. No estimated or provisional result is ever posted.
After a close. A published close is never restated. A later change by the league is recorded as a forward correction event under the correction policy.
Venue designation. A listing venue may designate its own settlement source for the contracts it lists, and that designation governs those contracts. The index ledger is always built under the ranked list above.
Relationship to the methodology. These procedures govern how results are sourced and checked. They do not change how any value is calculated under the published methodology, and no published value changed on their adoption.