Indigenous Peoples Status Act Article 6
To acquire indigenous status, the individual may apply to adopt or list in indigenous writing the traditional indigenous name, or adopt the surname of one of the indigenous parents; the application may be arranged in writing by the statutory representative during the period the child is a minor, and apply by personal preference after said child has reached legal age, not restricted by Items 1 and 4 of Article 1059, and Items 1 and 2 of Article 1078 of the Civil Code, or Item 2 of Article 1 of the Name Act.Other than birth registration, application to acquire indigenous status as provided in the preceding paragraph is limited to once per minor period and once after the child has reached legal age.Adopted children acquiring indigenous status via application as provided in Paragraph 1 may apply to the Household Registration Office as interested persons for the household registration record or the household certificate transcript of their birth parents as provided in Article 65 of the Household Registration Act.