Privacy policy

Effective date: 22 September 2026. Harmony, operating from 10 Nambusunhwan-ro, Seocho-gu, Seoul, Republic of Korea 06703, publishes educational editorial material about digital asset technologies. This policy explains how information is collected, used, retained and protected when visitors read the site or contact the desk. It applies to the public website and editorial correspondence.

1. Scope and controller

Harmony is the publisher responsible for the editorial website and the information described here. The address above is the contact location for privacy questions. This notice covers browsing, cookie choices and messages submitted through the contact form. It does not govern external websites linked from our pages.

2. Information collected

Server logs may include an IP address, browser type, requested page, referring page and timestamp. The contact form may collect a name, email address and the text a visitor chooses to send. We ask visitors not to include wallet keys, account credentials or unnecessary sensitive information. We do not intentionally collect biometric data or precise location through this website.

3. Legal basis

We process essential technical data when it is necessary to deliver a page and protect the service. We process a contact message to respond to a request and maintain an editorial record. Optional analytics are used only after a visitor makes an affirmative cookie choice where required. Consent may be withdrawn by changing browser storage or contacting us.

4. Purposes

Information is used to provide pages, prevent abuse, answer correspondence, understand broad reading patterns and maintain reliable records. Editorial messages may be shared internally with the relevant reviewer. We do not use contact data to create a financial profile. We do not make automated decisions about a visitor.

5. Retention periods

Security logs are normally retained for 30 days, unless needed to investigate an incident. Contact correspondence is retained for 24 months after the last meaningful exchange, then deleted or anonymised. Cookie preferences remain in the browser until removed or replaced. A legal hold may extend a period where required by law.

6. Your rights

Depending on applicable law, you may request access, correction, deletion, restriction, portability or information about processing. Send a request to the contact channels on this site and describe the account or correspondence involved. We may ask for proportionate verification to protect another person’s information. We aim to respond within 30 days and will explain any lawful extension.

7. Service providers

Hosting, security, email delivery and analytics providers may process limited information on Harmony’s instructions. Providers receive only the data needed for their documented function. They must apply contractual confidentiality and security obligations. We do not sell personal information or provide it to data brokers.

8. International transfers

Some technical providers may operate infrastructure outside the Republic of Korea. Where information leaves Korea, Harmony evaluates the destination, contractual safeguards and applicable transfer requirements. A visitor may request general information about the safeguards used. We do not transfer contact lists for unrelated marketing.

9. Security and complaints

We use access controls, limited retention, transport encryption where available and review procedures appropriate to a small editorial publisher. No internet service can promise absolute security. If you believe information was mishandled, contact Harmony at +82-2-758-3942 or the address above. You may also contact the relevant Korean privacy authority or another competent regulator.

10. Changes and history

This policy was published for the 2026 edition on 22 September 2026. Future material changes will be dated at the top of this page and described in the revision record. The previous version was reviewed on 1 July 2026 during the site preparation process. Continued use after a change means the updated notice is available for reading, not that rights are waived.

11. Children and public content

The site is general educational content and is not directed to collecting information from children. If a parent or guardian believes a child submitted unnecessary personal information, contact Harmony so the record can be reviewed. Public comments are not currently enabled. Visitors remain responsible for choosing what they write in an optional message.

12. Contact procedure

Privacy requests should include the subject line “Privacy request,” the preferred response address and enough detail to locate the relevant interaction. Do not send passwords, private keys or identity documents unless specifically requested through a verified channel. We record the request date and outcome for accountability. Contact information is listed at 10 Nambusunhwan-ro, Seocho-gu, Seoul, Republic of Korea 06703.

For practical purposes, technical logs are reviewed only when needed to maintain availability, investigate abuse, or understand a service fault. Contact messages are accessible to the editorial and administrative people who need them to reply, and access is limited by account permissions. A typical message is retained for up to 24 months after the last meaningful exchange, unless a longer period is needed to document a correction, resolve a complaint, or comply with a lawful request. Routine server logs are normally rotated or deleted within 90 days.

Where applicable, requests may be handled under the Personal Information Protection Act of the Republic of Korea and other mandatory local rules. A visitor may ask what personal information is held, request correction or deletion, ask for processing to be restricted where the law permits, or withdraw an optional consent. Identity checks are proportionate to the request and may require confirmation from the email address used for correspondence. We aim to acknowledge a privacy request within five business days and provide a substantive response within 30 days, subject to lawful extensions.

Service providers may include a hosting provider, security monitoring provider, form-delivery provider, and privacy-conscious analytics provider when optional measurement is enabled. They receive only the information necessary for their documented function and are expected to protect it under contract or applicable law. Some providers may process information outside Korea; in those cases Harmony considers contractual safeguards, access controls, and the nature of the data before using the service. We do not intentionally send wallet keys, payment credentials, or sensitive identity documents to analytics systems.

Questions or complaints can be sent to Harmony at 10 Nambusunhwan-ro, Seocho-gu, Seoul, Republic of Korea 06703 or by phone at +82-2-758-3942. Please describe the request, the relevant page, and a safe way to respond; do not include passwords or private keys. We keep a record of the request and outcome for accountability, normally for up to 24 months. If a concern is not resolved, a visitor may contact the relevant Korean privacy supervisory authority or another competent regulator.

Revision record: this notice was published for the 22 September 2026 edition. No earlier revision is represented on this page. Future changes will show a revised effective date and a short description of the material change, and the previous version may be retained for compliance records.

In applying this notice, Harmony uses data minimisation as a practical rule. For example, a request for a broken link normally needs the page address and a reply address, not an identity document or account history. Technical records are reviewed only for availability, security, abuse prevention, and fault diagnosis. Routine server logs are normally rotated within 90 days, while a contact thread is normally retained for up to 24 months after closure.

The legal context may include the Personal Information Protection Act of the Republic of Korea and other mandatory rules applicable to electronic communications. A visitor may request access, correction, deletion, restriction where available, or withdrawal of optional consent. Requests can be sent to 10 Nambusunhwan-ro, Seocho-gu, Seoul, Republic of Korea 06703 or +82-2-758-3942, with enough detail to locate the record. Harmony aims to acknowledge a request within five business days and respond substantively within 30 days, subject to lawful extensions and identity verification.

Operational providers may include the hosting provider, a security monitoring provider, a form-delivery provider, and an aggregate analytics provider enabled only where the relevant choice permits it. Such providers receive only the information needed for their service and are expected to apply access controls and confidentiality obligations. Some processing may occur outside Korea; where that happens, Harmony considers contractual safeguards, transfer requirements, and whether the information can be minimised or aggregated first. We do not intentionally send private keys, passwords, or unnecessary identity documents to analytics systems.

Privacy complaints are recorded with the date received, the issue raised, the action taken, and the response date, normally for up to 24 months after closure. A visitor should avoid including passwords, wallet credentials, or sensitive documents in an email or form. If a concern remains unresolved, the visitor may contact a competent Korean privacy authority or another regulator with jurisdiction. This notice is effective 22 September 2026; future material changes will show a new date and a concise change description.