altcoins more than trading and scams.
http://designmind.frogdesign.com/2016/03/interview-blockchain-security-for-consumer-home-automation/
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RT: Our experiments covered four categories of technical proofs-of-concept that would help validate (or disprove) our hypotheses. We first needed to use a blockchain implementation that gave us the ability to build a service and API around it for both the wallet and the mining pool. For that, we researched and settled on DigitalNote XDN (digitalnote.org) for the purposes of this experiment. We next needed to design a protocol for the login handshake and micropayment exchange between a user and the service that would take the place of current multi-factor authentication methods using strong passwords, SMS codes, etc. We next had to connect this service and protocol as a custom authentication module within an established server framework.