Certificate Authorities for SSL/TLS certificates don't receive much scrutiny from the public. Recent events around StartCom and WoSign (see below) have proven that things can go wrong unnoticed for a long time. Certificate Transparency as a technology provides the basis for improvement, but by itself is not usable for everyone. This service allows you to use Certificate Transparency to your advantage.
You enter a domain name and an email address where you'd like to receive alerts. We periodically scrape several Certificate Transparency servers (Google Aviator, Pilot and Rocketeer, Venafi), and search for your domain in those logs. If we find a match, we'll send you an alert with the certificate details and the certificate itself.