Blockchain-technology is definitely a breakthrough; but do not let it "destroy-cash." To do so would just help the globalist's "war-on-cash." The growth of the block-chain "must" be parallel to "growth-of-cash." These two things can perfectly-compliment one another. In fact QR-coded blockchain-cash can be printed from anyone's computer; and instantly scanned with a smart-phone to determine if the bill still has value, when accepted. Today, you can print a bank-check, from your own computer, as long as it has your Universal-Branch-Code (routing-number in the USA) and your account number. SWIFT codes can also be used, in this scenario.
Also, Gold-NANO-Particles can be suspended in paper-currency. This is already being done in high-tech filter-paper. So sandwich a sheet of gold-infused paper between two outer-layers of protective paper and now your "paper-bills" actually have value!
http://pubs.acs.org/doi/abs/10.1021/la3012734
https://www.theswiftcodes.com/
**Finally, never-ever assume, that just because you see someone else on YouTube, TV or elsewhere "fake-media-protesting" the police or designing break-through technologies, that you can JUST-LET the EXPERTS take care of these things. The government-controlled-media cleverly-and-carefully produces such stories to keep you asleep in your easy chair, while they BURN-THE-REICHSTAG, just like they did in Oklahoma-City, on 911 and everyday now.
BTW, there is NO mystery about who burned the Reichstag. Hermann Goring claimed credit for this PERSONALLY. See his quote below:
"The only one who really knows about the Reichstag is I, because I set it on fire!"
You'll find this about half-way-down on page 1: