Put together a PowerShell script called, Get-NewNostrKeys. It is using nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqypgn65z37z7lejhdyatwa7mdpszc73ap0zvgut766re5hku2vgszv55mk66 nostr-keys-generator code. And looks like this.

For 21 sats, it can be downloaded from my BTCPAY Point of Sale app. If your interested in doing the same, the 'File Seller' plugin needs to be installed. This seems to be working without any issues.

https://btcpayserver.sytes.net/apps/4FN8TVQDJfsCewpd3QN3nqyS6enY/pos