The key is public by nature — it travels in the page source. It only works on cartorg.com.ua: a request from anywhere else is served, but never counted.
pk_47f019b05a772a237cfd2faa
<script src="https://relay.mib.news/w.js" data-key="pk_47f019b05a772a237cfd2faa" data-count="4" async></script>