The FED interest rates are defined in this market by the upper bound of the target federal funds range. The decisions on the target federal fund range are made by the Federal Open Market Committee (FOMC) meetings.
The resolution source for this market is the FOMC’s statement after its meeting scheduled for January 31 through February 1, 2023 according to the official calendar: https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm
This market will resolve to “Yes” if following the Federal Reserve's January/February 2023 meeting the upper bound of the target federal funds rate is exactly the same as the level it was prior to the meeting (namely it increased 0 bps). Otherwise, it will resolve to “No.”
The level and change of the target federal funds rate is also published at the official website of the Federal Reserve at https://www.federalreserve.gov/monetarypolicy/openmarket.htm
This market may resolve as soon as the FOMC’s statement for their January/February meeting with relevant data is issued. If no statement is released by February 8, 2023, 11:59:59 PM ET, this market will resolve 50-50.