Marinecoin has good potential. It briefly had a larger marketcap than bitcoin some years ago. It now has a new team and good project. It is a self sustaining, light code, time tested block chain technology supported by artificial intelligence. It is dev-less and has a low energy footprint. MarineCoin is being revived with an ICO and 20000 free coins for each proof of promotion. It is a self sustaining network. Register at marineco.in. and place request here marineco.in/ico. for ICO