Porn star Brenna Sparks is not the only one warming up to blockchain tech. Startups such as Spankchain as well as Vice Industries are attempting to fuse intimate desires with software undergirding cryptocurrencies such as ether. Maybe the long search for a real-world, ready-now blockchain technology use case is finally over. Then again, both user and performer could simply download wallets and exchange peer-to-peer electronic money, say bitcoin cash, without any startup companies between them.