(a) An agency, licensed by the Texas Department of Protective and Regulatory Services (PRS) which applies the minimum standards and guidelines for child-placing agencies to place children for adoption, or an association of those agencies, that was in existence on or before January 1, 1984, may establish or operate a voluntary adoption registry, but only in compliance with the Texas Family Code, §§162.401 - 162.422.(b) The bureau shall operate a Central Adoption Registry in compliance with the Texas Family Code, §§162.401-162.422.(c) An adoptee, a birth parent or a biological sibling may register with the registry of the agency through which the adoptee was adopted or placed for adoption and with the Central Adoption Registry. If the client initially registers with the child-placing agency's registry, that registry shall forward a copy of the registrant's application, along with appropriate identification, to the Central Adoption Registry.