I’ve added my Keybase Proof as a text file at the root of this site. I used to have my site proven via DNS but for whatever reason CloudFlare removed my TXT record breaking the proof. I decided that having the .txt file proof was more resilient because even if I change hosting (Currently on Github Pages) my proof will remain intact.
If you aren’t on Keybase check it out. I like to think of it as “crypto-as-a-service”. They have the ability to share files or have chats (team or one-on-one) that are encrypted end-to-end.