Even if you wrote the code yourself you can come back to it a while later and have a wtf moment ¯\_(ツ)_/¯

I tried setting this up a few years ago without success. Prompted by your post I took another look and I think I was trying to serve my key from a mishmash of the direct and advanced URIs (although I don't remember there being an advanced and direct method when I first tried this) and I had a TXT record setup in DNS as well for some reason. Might have been following a draft RFC? Whatever I was trying, it didn't work for me then.

No one I know other than a couple of services I have accounts with use pgp so it is of little use to me right now. But I am glad it is now working and I don't need to rely on any 3rd party keyservers. So thanks for the prompt and the write-up.