Thanks for the compliment and acknowledgment of my efforts on Musing. I'm really flattered that you think that way and that I can offer some, clearly valuable insight in my Q/A's.

To naswer the question, imo, it would have to be hashcash. His answers are always correct and go in great detail in explaining whatever is asked. I greatly appreciate his perspective on any subject, and generally him as a great member of the Musing community.