b-money was announced on the cypherpunks mailing list in 1998. Here’s the archived post: https://cypherpunks.venona.com/date/1998/11/msg00941.html
There are some discussions of it at https://cypherpunks.venona.com/date/1998/12/msg00194.html.
Thanks for letting me know about your paper. I’ll take a look at it and let you know if I have any comments or questions.
[Note: This email is undated in the original source (Gwern’s archive). It was sent sometime between August 22, 2008 and January 10, 2009. The date 2009-01-10 used in this archive is a placeholder based on the next known email in the thread.]