Yes you can. Rosetta@Home was the first project to be supported with PoDC (Proof of Distributed Computing). World Community Grid (WCG) was added as a second project as R@H kept running out of tasks for the BiblePay team. Some of the docs are not up to date, but currently both Rosetta@Home and World Community Grid are supported. For the QT wallet and CPID registration, only R@H is currently supported. Your CPID will eventually match on both projects as long as you use the same e-mail to register on both sites.