I would pay a bounty for this feature. Cake Wallet already had a full version of this feature, even though it was in the beta phase.
Nostr needs this feature by default. On-chain needs to be used more and have more social use cases.
Discussion
Yes there are many more now, https://silentpayments.xyz/docs/wallets/
I want a solution that is ready to use straight away on nostr and with it, all npubs can receive a private on-chain transaction on their profiles. Only the sender knows your public address.