Matt lets us test it out:
https://twitter.com/MatthewZipkin/status/1416010106047811593

You can verify this message was signed by whoever owns `pinheadmz` on Handshake:

"It is July 16 2021. I am @matthewzipkin on twitter and I own the HNS name pinheadmz"

pAKerEd0nvGQKWIp38t9x17Tk8Xft4ceZGESGNALJRN+q0Uh5R6KkQ1tidXBvRdpkegUbrBJy7x0C4Hmlbyr2A==

Via Matt Zipkin - https://twitter.com/MatthewZipkin/status/1416010765597827072

You can imagine lots of ways to use this:

- A service that requires a name owner to prove something (name, email, auction listing location, etc) An example is a website could require you to sign a challenge string with your handshake name to login. Or you could sign an email message with your handshake name to verify your identity.

- A service that offers rewards to users that own their own names with their own private keys instead of using Namebase 😉