IOTA is probably your best bet, although it is still in development. HN loves to hate on it (probably because their funds are elsewhere), but if you read throu

IOTA is probably your best bet, although it is still in development. HN loves to hate on it (probably because their funds are elsewhere), but if you read through the whitepapers and the Github I think it is probably the one of the most promising cryptos for actual real-world use. Raiblocks would be my next guess.