It's so humiliating that people only remember him for bitcoin because
   he had such great ideas and work.Today is the anniversary of his death,
   and you will always be remembered well, Len

   [1]https://datatracker.ietf.org/doc/html/draft-sassaman-mixmaster-02

References

   1. https://datatracker.ietf.org/doc/html/draft-sassaman-mixmaster-02