This concept is revolutionary, because it allows for the child chains to be pruned / extreme blockchain performance / scalability.
Every tx on the ardor network will cost ~10 ardr and stakers will recover rewards from tx fees paid on the ardr main chain and EVERY child chain supported by the network. According to the bitcointalk OP for Ardor, they have many features and partnerships in the works that have not been disclosed.
Fundamentally, Ardr is a Lsk competitor with 1/5 of the market cap. The current Ardr token is an IOU, as the Ardr main net is due to launch in q4 2017.
Jelruda, the team behind Nxt, Ardr, and Ardr's first childchain (ignis), has successfully raised over 650 btc for their ignis ico 0.00% (which isn't even over), and now has significant funding to further the project. The biggest problem with Nxt was funding, as the Nxt ICO 0.00% was in a different era.
You can read more about ardr and child chains here:
Ignis child chain info:
Ardr will be one of the premier "Blockchain as a Service" Platforms of the future and has a low market cap of 135mm at the time of posting.
Technically... as you can see, Ardor has made a significant retracement from its last high and is currently sitting on what appears to be an extremely strong historical . The are extremely compressed on the 1D chart, showing that a move could be imminent. Coupled with a clear ... this is as good of a buy as it gets.
For me, this is a perfect entry to a project with the right team and the right mission to be a 1billion + cap one day. Strap in, dis gon be gud.