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The BIP-352 Silent Payments proposal creates an opportunity to define a distinct Nostr Silent Payments (NSP) derivation model for a Nostr identity.
This work arose from related efforts to derive a Taproot (p2tr) address from a Nostr public key and to understand how Nostr identity material could map deterministically into Bitcoin wallet semantics. That earlier exploration made it clear that the same identity-linked approach could be extended beyond a single visible Taproot address into a richer Silent Payments receive model.
One of its most important properties is that Silent Payments can provide a static payment address: a stable Silent Payments receive identity that can be reused by senders without creating a reusable on-chain receive