ag-trade presentation recording

[dckc]

@kriskowal I suppose I should use one in the usual endo Sync playlist. But

1. for want of patience
2. for redundancy in case youtube decides they don't like us any more (cc @erights )

I uploaded a copy to the Internet Archive:

• using the endo daemon to interact with the Agoric chain : Internet Archive

so I might use that one.

It's un-edited; it includes the other endo stuff after the presentation. I can probably cut that out if it seems worthwhile.