Privacy Policy

1. Data controller

Datanode Core is the data controller. Contact: support@datanode-core.digital, phone +14-2-381-3414. Postal reference: Street: 223-2, Gaipri, Hyeongyeong-myeon; City: Muan-gun; State/province/area: Jeollanam-do; Phone number: +14-2-381-3414; Country calling code: +82; Country: Korea;

2. Data we collect

We may collect identity and contact data you submit (name, email, optional topic, message content), technical logs (IP address, browser type, pages visited), and cookie preference signals stored locally in your browser. Do not send seed phrases, private keys, or passwords.

3. Purposes and legal bases

We process data to respond to inquiries, deliver educational access you request, secure the site, measure aggregated traffic (if analytics cookies are accepted), and meet legal obligations. Bases include contract performance, legitimate interests in operating a secure education site, consent for non-essential cookies, and legal compliance.

4. Retention

Contact messages are retained up to 24 months unless a longer period is required for an active dispute. Server logs are typically rotated within 90 days. Enrollment records for paid seats are kept for the period required by Korean bookkeeping and tax rules, then deleted or anonymized.

5. Sharing

We use infrastructure and email providers that process data on our instructions. We do not sell personal data. We may disclose information if required by law or to protect rights, safety, and security.

6. International transfers

Although we are based in Korea, some processors may store or access data in other countries. Where transfers occur, we seek appropriate safeguards such as contractual clauses and vendor due diligence.

7. Your rights

Subject to applicable law, you may request access, correction, deletion, restriction, or portability of your personal data, and object to certain processing. You may withdraw cookie consent by clearing the site’s stored preference and revisiting the banner choice. Contact support to exercise rights. You may also lodge a complaint with a competent Korean data protection authority.

8. Security

We apply administrative and technical measures appropriate to an educational website. No method of transmission or storage is perfectly secure.

9. Children

Services are directed to adults. We do not knowingly collect data from children under 16.

10. Cookies

See our Cookie Policy for categories, durations, and controls.

11. Changes

We may update this Privacy Policy by posting a new version with a revised date.