Need to be PGP-signing code

This git commit is PGP-signed, which you can see if you do git log --show-signatures

Even for trivial stuff like demo code you should be signing code consistently; best practice is if every git commit published on an external site is trusted. The Bitcoin Core project is pretty good about this with Wladimer especially consistent about signing commits.

Of course, PGP-signing is kinda inconvenient without nice things like PGP smartcards... we should meet up in person sometime and I'll get you guys setup with that to make the process streamlined enough to use it consistently.