Dave Rogenmoser is the founder and CEO of Proof (YC W18). Proof is an embedded script for displaying public conversion data (i.e. John from SF just subscribed)

Dave Rogenmoser is the founder and CEO of Proof (YC W18). Proof is an embedded script for displaying public conversion data (i.e. John from SF just subscribed). Martech companies like these guys are infamous for injecting their own Facebook pixels for personal use. My guess is that at some point you visited a site with Proof embedded and for whatever reason it fired a tracking pixel assigned to Proof (and not the site you were on). Alternatively, and less ethically, he uploaded a list of customers scraped from Proof to build his own audience. Proof garners data about purchases, so it's possible Dave determined you were an advantageous lead and added you to his list.