F4Alerts

A shielded memo is the signup form

Turnstile watches a mainnet address for encrypted memos. Send one naming your alert topic, and you are subscribed — using the chain itself as the signup mechanism, with no personal data anywhere in the loop.

Subscribe with a shielded memo

Pick any topic name. Send 0.0001 ZEC to the Turnstile address with the memo below. The memo is the signup form — no email, no account, and nothing that identifies you.

Your topic

Memo

TURNSTILE:SUB:your-topic

Enter a topic to generate the QR

48 hours before1 hour beforeAt activation

Anyone who guesses your topic can read the same alerts, so pick something unguessable if that matters to you. Turnstile stores the topic and nothing else.