I am looking for a library that provides a blockchain, without needing a consensus mechanism. 50% of the the need is to gain experience and 50% is for a couple of light weight projects. I was hoping this was something I could try out but from the comments it looks like not. I use nodejs so extra points for that, but I am open to other alternatives. An example project would be to set up a local swap market, where users can swap appliances for swap-coins, then spend those for other appliances at a later time.