This reminded me a similar problem of proof-of-stake validators - https://twitter.com/joemwastaken/status/957399723282870272 …. Interesting if #Ethereum will use a carrot or a stick to solve it, probably the stick because the carrot is not very suitable for beating...
#Ethereum tribe should leave $IOTA alone for now. they should be FUDing or dreading $EOS right about now. when it goes live in June and delivers on its promise then @bytemaster7 will give them an existential hangover 

https://youtu.be/xkXuFeN-KMw