Was Biden campaign call fake?

On July 22, during a campaign event in which Biden called in, Kamala said “I know you’re still on the rec…on the call.” prompting speculation that it wasn’t a live call-in but a recording (see: https://x.com/MarioNawfal/status/1815674259487826385). This market will resolve to "Yes" if definitive evidence emerges that Joe Biden's call during Kamala Harris's campaign event on July 22 was pre-recorded or AI-generated by July 31, 2024, at 11:59 PM ET. Otherwise, this market will resolve to "No." The resolution source will be a consensus of credible reporting.