(a) The administrator shall require each registration applicant to sign a written application.
(b) An adoptee adopted or placed through an authorized agency may register through the registry maintained by that agency or the registry to which the agency has delegated registry services or through the central registry maintained by the vital statistics unit.

(c) Birth parents and biological siblings shall register through:
(1) the registry of the authorized agency through which the adoptee was adopted or placed; or
(2) the central registry.
(d) The administrator may not accept an application for registration unless the applicant:
(1) provides proof of identity as provided by § 162.408;
(2) establishes the applicant’s eligibility to register; and
(3) pays all required registration fees.
(e) A registration remains in effect until the 99th anniversary of the date the registration is accepted unless a shorter period is specified by the applicant or the registration is withdrawn before that time.
(f) A registrant may withdraw the registrant’s registration in writing without charge at any time.
(g) After a registration is withdrawn or expires, the registrant shall be treated as if the person has not previously registered.
(h) A completed registry application must be accepted or rejected before the 46th day after the date the application is received. If an application is rejected, the administrator shall provide the applicant with a written statement of the reason for the rejection.