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 for how to notice.
• Wallets are public chain data. Holder lists in Cash Payback rounds show the wallets paid and what each was sent.