It's not about letsencrypt but certificate transparency which works the same for all public CAs. I wrote a documentation piece here: https://www.merklemap.com

It's not about letsencrypt but certificate transparency which works the same for all public CAs. I wrote a documentation piece here: https://www.merklemap.com/documentation/how-it-works https://www.merklemap.com/documentation/how-it-works