Thanks for replying. i understand that, and am not saying it would be easy to implement, but i do think it could be achieved. How is a deep subject however, but the potential method i have in mind could have many other benefits to the chain (or community in which it could be tested). It is a big subject and would take a lot of work. We did touch on the subject about four years ago and i would be happy to discuss with you if it's of interest to you.