The Platinum Coin’s Originator

Brian Beutler tracked him down:

Its origin can be traced back to the comments section of a blog. An American lawyer writing under the pseudonym Beowulf first explained the platinum coin concept in the comments section of a post titled "Repeat After Me: The USA Does Not Have A ‘Greece Problem’," written by Marshall Auerback and published on a blog called The Center of the Universe. His comments caught the attention of other writers, including management consultant Joe Firestone (.pdf), who pressured him to expand on the idea.