Proof of adoption
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) An adopted child is—
(1) A child adopted by the employee or retiree before the death of the employee or retiree; or
(2) A child who lived with the employee or retiree and for whom a petition for adoption was filed by the employee or retiree and who is adopted by the current spouse of the employee or retiree after the death of the employee or retiree.
(b) The only acceptable evidence to prove status as an adopted child under paragraph (a)(1) of this section is a copy of the judicial decree of adoption.
(c) The only acceptable evidence to prove status as an adopted child under paragraph (a)(2) of this section is copies of—
(1) The petition for adoption (clearly showing the date filed); and
(2) The judicial decree of adoption.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.