Resonant Circuit

Privacy

hahnryu.com (Resonant Circuit) is run by Hahn Ryu. This is everything the site collects and how it is used. Questions and deletion requests: [email protected].

Email subscription

  • What: your email address, when you signed up and confirmed, and your language.
  • Why: only to send new-post emails. Never sold or shared for ads.
  • How long: removed from the list within a day after you unsubscribe. Addresses never confirmed are removed after 7 days. Every email has an unsubscribe link. Server backups may keep a copy for a while.
  • Where: on the site's own server in South Korea. Delivery is handled by Brevo (France). Opens and clicks are not tracked.

Telegram channel

Subscribers of @from2to3 are not shared with the site. Telegram's own policy applies.

Comments

  • What: the name you enter and your comment, kept on the site's server.
  • Spam filtering: to catch ads and abuse, the name and text of a new comment may be sent to Anthropic's AI (USA) for a verdict only.

Analytics and fonts

  • Google Analytics counts which posts are read. It uses cookies and is not used to identify you.
  • Fonts load from Google Fonts and jsDelivr, which see your IP address.

Effective October 21, 2026