# Bitcoin Privacy Bip47

> BIP47 PayNyms — reusable payment codes via notification tx + Diffie-Hellman derivation. See also the wallet-side reference at ../../wallets/payment-codes/. USE WHEN: integrating PayNyms, evaluating against Silent Payments.

- Skill: `claude-dev-suite/bitcoin-privacy-bip47` (Agent Skill)
- Install (CLI): `npx skillmds@latest add claude-dev-suite/bitcoin-privacy-bip47`
- Raw SKILL.md: https://api.skillmd.com/api/skills/claude-dev-suite/bitcoin-privacy-bip47/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: claude-dev-suite (https://skillmd.com/u/claude-dev-suite)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/claude-dev-suite/bitcoin-privacy-bip47

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# BIP47 PayNyms (privacy view)

Privacy-oriented summary; full details in
[../../wallets/payment-codes/SKILL.md](../../wallets/payment-codes/SKILL.md).

## Privacy properties

- Sender has anonymity-of-1 — server can correlate "X paid Y" via
  notification tx.
- Receiver public address never appears on chain.
- Different sender pairs use different derivation chains → no
  cross-sender correlation.

## Compared to Silent Payments

- BIP47 has **notification tx** that leaks the existence of
  sender ↔ receiver pairs.
- Silent Payments has **no notification tx** — better privacy.
- BIP47 has **lower scan cost** for receiver.

## Status

- Sparrow + Stack Wallet maintain BIP47 support.
- Samourai (formerly the dominant BIP47 wallet) shut down 2024.
- Adoption in decline as Silent Payments matures.

## See also

- [../wallets/payment-codes/SKILL.md](../../wallets/payment-codes/SKILL.md)
- [silent-payments/SKILL.md](../silent-payments/SKILL.md)
- [stealth/SKILL.md](../stealth/SKILL.md)