Re:

[Scott Bradner <sob@harvard.edu>]

> We also have the working group rosters that people write their names 
> in.  That might be a possible way of validating that someone one also 
> participated in the meeting.

once upon a time these were typed into a database but that stopped 
a while back - they are still being done as part of the documentation
process needed in today's standardization world (they are kept at
the secretariat for retrieval if needed) so it would be laborious
to use the sign in sheets as proof

Scott