There's a fuckboat of this kind of stuff, like you could write a book's worth on it considering how much is coming into the fore.
Reading the parent comment and it being pretty much "Blockchain for law enforcement and justice record keeping" definitely makes me feel a little off here but then again this one actually looks like it's at least trying to approach the problem of record keeping maintenance. I don't really think there's a hell of a lot out there but this field has an interesting and controversial history. Just check out the inslaw/PROMIS (prosecutor's management inventory system) scandal. I think the US Justice Dept concluded there was no wrongdoing but Canada's RCMP has a very different opinion about the compromising of their law enforcement record keeping system breach.
Medicine is one. Law still is, though less so as digital document management has made their lives a little easier.
Law enforcement is a BIG one. You can sell snake oil to LEOs very easily, and many people DO. I think it's a combination of organizational hubris and a sort of "nobody understands our work" bullshit that keeps them from listening to industry authorities and makes them susceptible to ignorant charlatans peddling crap that's Made For Police or whatever.