I sent a bunch of messages to the list before and after, but yes that was the main one about b-money. BTW, for anyone interested in the history, looking back at the responses in my libtech archive (which I was not supposed to keep, according to the list rules) it seems clear that Nick already had similar ideas when I posted that message and was trying to solve the "Byzantine Agreement" problem in a practical way, whereas I for some reason confidently stated "an ideal broadcast channel [...] can be implemented with existing cryptographic tools", which probably explains why I made my ideas public first and ended up getting a large share of the credit later. There's probably a rationality lesson here, but I'm not sure what.