That was my suspicion. Color me very surprised if YC's bookface site for founders does not have a offers tab where founders can post that they made an offer to

That was my suspicion. Color me very surprised if YC's bookface site for founders does not have a offers tab where founders can post that they made an offer to a specific person by name, with a nice timeline view of the candidate's counter offers. The same feature might also have a The Work Number API integration that lets founders see the salary history, credit score, and estimated bank balances (thanks fintechs) of each candidate as well.