Which conference? Where and when?
It starts with "The", and ends with "Bitcoin conference".
And was in the US, was one which boussac traveled, and was subsequent to the loss.
The 2013 one in San Jose, CA. Sorry to have left my comments in a state which required so my detective work to unwind. Boussac presented at the conference ('Future of Payments' or some BS was the formal name IIRC), but I am less interested in the business stuff and didn't see any of his presentations.