Can US/Singapore citizens participate in the ICO?
Denarius is not an ICO. Anyone can participate in mining, staking, or trading. It is an open source cryptocurrency.
if this means it is not ICO
where does the project get the funds to run its project?
what this means is just a coin for mining
99% of ICOs is scam. With ICO doesn't mean you will have a successful projects.
Besides, some developer would use premine instead for future development.