Md. Code, Family Law § 5-4C-06

(a) (1) To register with the Registry, an individual shall submit a notarized affidavit containing the following information:

(i) the individual’s current name and any previous name by which the individual was known;

(ii) the individual’s address and telephone number;

(iii) if the individual is a natural parent of the adoptee, the original and adopted names, if known, of the adoptee;

(iv) if the individual is an adoptee who is seeking information regarding the adoptee’s natural parents, any names, if known, by which the natural parents are or were known;

(v) if the individual is an adoptee who is seeking information regarding a natural sibling, any names, if known, by which the natural sibling is or was known;

(vi) if known, the place and date of birth of the adoptee;

(vii) if known, the name and address of the child placement agency, if any, that placed the adoptee;

(viii) if known, the names of the adoptive parents of the adoptee;

(ix) the name and address of the court that issued the adoption or guardianship order; and

(x) a statement of the individual’s consent to be identified to other registrants.

(2) A registrant shall notify the Administration of changes in information occurring after the affidavit is filed.

(3) A registrant may withdraw from the Registry at any time by submitting a notarized affidavit to that effect to the Administration.

(b) (1) The Administration shall obtain information necessary for identifying an adoptee, a natural mother of an adoptee, a natural father, or a natural sibling.

(2) The Administration may not obtain information regarding:

(i) the adoptive parents of the adoptee;

(ii) a child of the adoptive parents who is not a natural sibling; or

(iii) the financial status of the adoptive parents of the adoptee.