Could I pay his invoice nostr:npub10npj3gydmv40m70ehemmal6vsdyfl7tewgvz043g54p0x23y0s8qzztl5h or how could that work?

Yes, I can accept XMR equivalent to the sats amount to my Monero :monero: payment target and then manually whitelist you, for now. Need to do a bit of API tweaking, for something more permanent. Just tag me, after you do it. 😊