What this site records, and what it does not.
For each page view: the page, its language, the site you arrived from, your country, your browser, your operating system and the kind of device. These are per-day counters — a row records how many visits a page had, never who made them. Country is a two-letter code, and it is the only location kept.
To count people rather than page views, your IP address and browser are hashed together with a secret that changes every day. The address itself is never stored, the hash cannot be reversed, and the same person produces a different hash tomorrow — so nobody can be recognised from one day to the next.
No cookies, no consent banner, nothing stored on your device, no advertising, no ad networks, no third-party analytics, and nothing sold or shared with anyone. I cannot learn your name or your email unless you send it to me.
Everything above is deleted after 90 days. None of it identifies a person, so there is nothing to remove on request — but if you have a question, write to privacy@serhii-butko.com. Data controller: Serhii Butko, Kyiv, Ukraine.
Last updated: 2026-09-09