This is a good idea, but not new at all. For more details on the concept and some examples where RBF (Results based financing) is already successfully used, ref

This is a good idea, but not new at all. For more details on the concept and some examples where RBF (Results based financing) is already successfully used, refer for example to Instiglio, a NGO consultancy in this space: http://www.instiglio.org/en/publications-and-resources/ http://www.instiglio.org/en/publications-and-resources/