Exclusive mining was one of the suggestions made in a 2013 paper to
   which I contributed.
   We also recommended a rolling active blockchain to help provide a
   determinate chain size.

   On Tue, Sep 8, 2020, 4:34 PM jim bell <[1]jdb10987@yahoo.com> wrote:

Decrypt: Researchers Find New Way for Criminals to Launder Money Using Bitcoin.
[2]https://decrypt.co/?p=41024

References

   1. mailto:jdb10987@yahoo.com
   2. https://decrypt.co/?p=41024