You're right about Cryptonote coins. I should've worded my statement more carefully.
My opinion of Cryptonote is that it causes an unworkable degree of blockchain bloat - so much so that it's unlikely to scale even on PCs, never mind on mobile phones. Boolberry have made hotly disputed claims about being able to reduce bloat, but to my knowledge this has not been implemented yet.
If a coin bloats, then in my opinion it should not be considered "workable", since it simply can't scale to mainstream (or even sizeable niche) adoption.
So although there's a clear sense in which Cryptonote coins are "working", there's also a clear sense in which they're not workable solutions.
XC, on the other hand, is designed from the ground up for mobile. It's eminently scalable.
I'm confused, are you suggesting that mobile devices will run a full node? That seems ill-advised for XC or Monero or any other cryptocurrency.
Some mobile devices will run with a full node. They'll stake and everything.
Other devices (say, dumbphones) that can't run a node will end up using PoBC. The basic idea is:
- dumbphone node contacts other nodes
- provably establishes that the other nodes' blockchains are legit
- thereby proves that a given tx is legit
Why would you say that this is ill-advised? In my view mobile-friendliness is absolutely critical to mainstream adoption.