It just occurred to me that this blockchain trim tech has inherit privacy advantages.. if the account information remains intact but the paper trail gets trimmed from time to time, that means transaction history eventually gets removed. That is quite possibly the most promising tech when it comes to anonymous transactions that I've come across yet. By the time the government gets around to trying to trace the history, the history is trimmed.
On the opposite end of the spectrum, this tech could be used to store information about people like their identity, medical information, etc. while maintaining a max blockchain size. Each individual would get their own unique account number, and the information contained in it (besides the account balance) would be encrypted. That would be useful as well.
There would, however, be no paper trail of this information going back to day one. If that's what the government or other organization using the tech wants, they'd have to use the conventional blockchain tech for that.
I'm not worried who's investing in what.. outside the mediocre name this is some of the best tech out there trading at stupid low prices. Unlike Xtrabytes, this one has an in-depth white paper and well laid out website.
It actually presents a good argument for preserving proof of work, as well.. for you mining whales.
Disclosure: Long PASC and XBY