I've been working on a big coin for the past month, and it's been on my mind for over a year now with all the ideas for it finally having a solid solution and plan to accomplish it. Sadly, Supcoin is not that coin. Basically, I need a coin to test some things, and that is this coin! I'm not ready to discuss my big coin project just yet (there will be a pre-ann in a couple months), but this coin is my way of making sure that the codebase I'm using is good.
So what that coin qtum or did you work on other coins in between?
I had another coin in between that I was designing from scratch (internal name was Earlzcoin. I think I announced some of my plans somewhere on bitcointalk). Anyway, it had too many design flaws and was way too much work for just 1 person. I was pretty much out of the crypto game when Patrick approached me about Qtum's core idea, and everything just kinda took off from there. Funny enough, I've been skimming through my old design docs for Earlzcoin and looking at how the goals can be accomplished in Qtum. One of the cool ones is "recurring transactions". With smart contracts, this is suddenly not a hard problem. It's pretty exciting to integrate some of my "dream designs" into Qtum as a real world application