If someone is already in the system and has 10000 sim. He then goes on and creates 10000 "fake" nodes, all with one Sim in them. How are cases like this handled?
Also, what keeps those nodes behaving in a malicious way like fast building an alternate Blockchain they all vote on?
What cost are involved for a node if it casts a vote for the next block?
There will be no blocks or blockchain, but I see your point. This is exactly what I am working on right now - finalizing how consensus will work.
I'd like to discuss it, but unfortunately can't reveal it just yet - this is the core of the system, I need to protect you, as investors, from clones until Simcoin is released.
Once it's working on the Test Net we can discuss how to improve it further.
...in which only nodes count...
That's not PoS then, is it?
That's failure.
Basic idea will be the same - to subvert the system you will need the majority of stake.
I am working on the details (in fact just spent most of my working hours today thinking about it) since I am close to testing first transactions.
The problem gets even more complicated when you factor in the possibility of DDoS attacks, as well as several other issues.
I am trying my best to find an optimal solution...