I propose that HOPR partners with an entity such as the Freedom of the Press Foundation (freedom.press) who would own and build the front end user interface (potentially funded through their own grant program) and to fact check and report on leads submitted to them. HOPR would be providing the privacy and metadata privacy necessary to protect whistleblowers from the negative consequences of informing the public of a wrong doing. Other partners would likely need to be involved such as decentralized and secure data repository.
This proposal is for creating a framework in which people can feel safe in reporting a wrong doing, not really about confirming the information as being truthful/accurate. Teaming up with the Freedom of the Press Foundation (freedom.press) may be a good option for vetting and releasing credible information.
I am not suggesting that HOPR be the public face to this, merely the privacy tech that allows it to function as intended. Freedom.press or the like could own the front end and of course there will need to be other partners to make it all work.