Just went over Ark's website after seeing its big rise today ,Their roadmap is extremely good seen nothing like it very in depth and explains a lot about their future ,Are their many others using the delegate system they have ?
Not, their system still under the development, you can see that the truth if the ark still develop the cross blockchain system that provide the bridge between the a blockchain into the b blockchain. but it caused by there are some update regarding the development of the project itself.