You can't "imply" something's open source. Either the source is available for all to see or it isn't. So which is it?
MicroCash isn't released yet so the source isn't available. SolidCoin source has been available not far from when it was released, that is what I meant it's implied open source. The project it's spawning from is, why wouldn't we assume this is also?
http://solidcoin.info/downloads.html