According to the pilot, he landed the tailwheel equipped airplane on a private grass strip and the airplane bounced. When the airplane settled back onto the grass, the pilot inadvertently applied the wheel brakes. Subsequently, the airplane nosed over, and came to rest inverted, which resulted in substantial damage to the wings, fuselage, and empennage. The pilot stated that there were no preimpact mechanical malfunctions or anomalies with the airplane that would have precluded normal operation.