I need to find all the IPFS hashes that have followed these instructions. I want to see how difficult such a thing is.

https://flyingzumwalt.gitbooks.io/decentralized-web-primer/content/files-on-ipfs/lessons/add-and-retrieve-file-content.html

#todo What's the best way to ask IPFS where my "public key" encrypted mail files are? Can I search for other people including ...