Prepare a 7-inch springform pan with non-stick spray. Set up the Instant Pot with water and a trivet. Make an aluminum foil sling for the pan. Create an Oreo crust by pulsing Oreos, mixing with melted butter, and pressing into the pan. Freeze while preparing the cheesecake filling.
In a rinsed food processor, blend cream cheese, sugar, and vanilla until smooth. Melt chocolate chips with heavy cream and add to the cream cheese mixture. Incorporate cocoa powder and add eggs, pulsing until just combined.