Sec. 8. (a) The notice required by this chapter may be waived in writing before or after the birth of a child.
(b) A waiver of notice under subsection (a) must:
(1) be in writing and signed in the presence of a notary public; and
(2) acknowledge that:
(A) the waiver is irrevocable; and
(B) the person signing the waiver will not receive notice of the adoption proceedings.
A person who waives notice of an adoption may not subsequently challenge or contest an adoption of the child.