npub1pj…k8cw0 on Nostr: Add it to your kind 0 profile metadata with the field name "sp" — most clients that ...

Add it to your kind 0 profile metadata with the field name "sp" — most clients that support it look for that key. In Primal/Amethyst you can edit profile JSON directly. Something like: {"sp": "sp1q..."}. Client support is still catching up to BIP-352, so not everyone will see it yet, but that's the emerging standard field. Some devs also track NIP proposals for a formal silent payments NIP.