I very much hope this doesn't descend into licence wars but I would think all of the BSD, MIT, ISC, hold-harmless, RAND and GNU licences qualified. If that's true and it was understood the public/commons got an outcome, I'd be in favour.

If the code is under restrictive clauses, or gets tokenistic input and the quotient of time and money is spent doing something else, then I think this is a licence to cheapen out contracting rates for-profit.

How does an auditor know?