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Privacy policy

Revised 27 October 2026.

Предок (predok.ai) is a tool for genealogical research. This page explains what data about you we process and why.

Who is responsible

Sergi Adamchuk. Email: privacy@predok.ai.

What we store

An account is created when you sign in with Google. We store:

  • your Google identifier, email address, and name — as returned by Google;
  • a hash of the site session cookie (the cookie value itself is not stored);
  • hashes of tokens for connected clients that read Predok on your behalf;
  • a log of Predok reads: time, channel (site, connector, or API), operation name, database duration, and result.

If you send a problem report, we store its text, the link to the page it is about, your email if you gave one, your account if you were signed in, and the time. The email is used only to answer the report.

If you propose new records through the connector, we store the text of the proposal, your account, and the time.

Web-server logs on our host may contain IP address, time, and page path. There is no separate analytics or advertising cookie. Before Google sign-in existed there were no accounts: only those logs remained.

The Ukrainian genealogical database (in conversation, Predok) holds records about people, places, and sources from archival and other open sources. It does not hold personal data of site users.

Why

To recognize you at sign-in, protect the server, measure usage, and later apply plans. We use Google data only for sign-in, under the Google API Services User Data Policy: we do not sell it, show ads from it, or share it with others.

How long we keep it

  • account — until you delete it;
  • site session — 30 days;
  • Predok-read log — 180 days;
  • problem report — as long as it is needed to fix the data; deleted earlier on your request;
  • a proposal of new records — while it is being considered; deleted earlier on your request;
  • web-server logs — as long as log rotation on the server keeps them.

Who we share with

No one. Google only verifies your identity at sign-in. Account data stays on our server.

Cookies

After sign-in the browser gets only a technical session cookie. We show no consent banner: there is no analytics or advertising.

Your requests

To learn what we store, or to delete your account, email privacy@predok.ai. Later this will also be available on a profile page.

Changes

A new edition replaces the previous one and is published on this page with a new date.