I still don't get cryptocurrencies. Yes, a blockchain works when zero trust is needed/desired for transactions, but that's still an implementation-level concern, and implementations aren't perfect. Without legal means of redress, somebody is always going to get burned. If there are legal means of redress, then by definition you trust somebody, right?<p>I think a blockchain fits well when you need to verify a legal authority, like a felonies database (can you trust the cop that filed the report?), but otherwise it kind of just goes around the legal system; by doing so, you're just re-inventing the wheel.