(Incidentally, as far as I know, I'm the first person to propose the basic 'chained hashing' scheme: http://www.gwern.net/Self-decrypting%20files#hashing I don't know if Todd or Taaki invented it independently or not.)
For the record, it was your essay which is where I first learned about the idea; I'll add a link to it in the README. My contribution to the idea is only the trick with Bitcoin addresses, and even that Takki deserves co-credit for as well.
(Incidentally, as far as I know, I'm the first person to propose the basic 'chained hashing' scheme: http://www.gwern.net/Self-decrypting%20files#hashing I don't know if Todd or Taaki invented it independently or not.)