I just realized i can create a type of zap based off redeeming bolt12 invoice requests.

It wouldn’t show who redeemed it but it could show that it has been redeemed. Not sure how useful that would be.

Maybe the flow would be: client generates bolt12 invoice_request with note metadata of where to send the receipt to.

When redeemed the node looks at note metadata in the offer description and sends a receipt to nostr showing that it has been redeemed.

This would be useful for sending lightning to people over DM that you can claw back after some expiry.