Campanolo record power meter crank with veloce crankset
No.

The Veloce crankset (assuming it's a 2011+ version) uses Campy's Power Torque system to attach the left crank arm.

The Centaur crankarm offered by Stages uses Campy's Ultra Torque design, as do all of the Campy crankarms Stages offers.

They are completely different.