Hmm I had never heard of Certificate Transparency, looks like its a relatively newish tech added onto how SSL/TLS certs work. It seems only Google Chrome & Safa

Hmm I had never heard of Certificate Transparency, looks like its a relatively newish tech added onto how SSL/TLS certs work. It seems only Google Chrome & Safari require SCT chains (not used by Firefox). Maybe I've never heard of it because I'm a Firefox user? You mentioned blockchain, does that mean there is a public blockchain for these Certs? I didn't see that mentioned anywhere but it does seem like blockchain features overlap with the desired features of "Certificate Transparency".