A simple option is CrowdCurity - reward programs as a service. Private or public, dollars or bitcoin payments - everything setup and managed for the companies.
Disclosure: I'm co-founder of CrowdCurity
Disclosure: I'm co-founder of CrowdCurity
Ps: the idea is pretty cool. So is the implementation =) though how would you guys have handled if an issue like this occurs on your platform? A submitter submits a bug but the company refuses to pay for it citing "out of scope" ??