# Privacy and opt-outs

> What the API shows about people, and what it never shows.


- **X handles are public.** A coin that pays an X account shows the handle.
- **Cash App, Venmo and Zelle** show the rail only (`{ "rail": "zelle" }`), never the username, email or phone number.
- **Accounts that opted out** of Payday are left out entirely: their coins leave `/coins` and the registry, and `/accounts/{handle}` answers 404. A coin that leaves the registry is not announced; see [the registry guide](/developers/guides/registry) for how to notice.
- **Wallets** are public chain data. Holder lists in Cash Payback rounds show the wallets paid and what each was sent.