Nano completely solves this. Under 1 second transactions fully confirmed, no mining, no inflation, it's decentralized (and getting more so). All the coins were premined. It uses a block lattice rather than a blockchain, so it is scalable (the main net is doing 185 transactions per second now (1776 tps on the test net). The system to determine voting power (regarding confirming transactions) is basically a liquid democracy where you can delegate your voting power (based on how many coins you own) to a different representative at any time. It leaves Bitcoin in the dust and is an incredibly elegant cryptocurrency that will be the future of microtransactions online as well as an actual usable cryptocurrency. nano.org