For posterity, here is what I wrote to Vox Day in an email on Aug. 16th, 2017:
On the topic of your latest periscope, I’d like to humbly request that you publish a gpg key that your followers can use to verify that publicly posted signed messages from you are actually from you when, eventually, your blog, domains, et. al are seized. Gpg gives you an online identity that you own independently of any third party. 1.4.x is the best version to use.
I recieved no response.