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For source questions, correction requests, accessibility feedback or topic suggestions, write to Harmony. Please do not send private wallet keys or sensitive account information.
Address: 10 Nambusunhwan-ro, Seocho-gu, Seoul, Republic of Korea 06703
Phone: +82-2-758-3942
Response principles
We review editorial correspondence during ordinary working hours in Korea. A correction request is assessed against the published source and the significance of the change; a submission is not a guarantee of publication.