Proof of Origin replaces certificate of origin, enabling self-declaration and centralised verification with specimen seal uploads. Amendment replaces Certificate of Origin with Proof of Origin, defined to include certificates issued by designated authorities and self-declarations as provided under trade agreements; verification requests must be directed to the designated international customs verification unit, which will upload specimen signatures and seals to the customs electronic system, circulate copies to non-electronic locations, forward copies to investigative authorities, implement an SOP to track uploads, and submit periodical reports to ensure consistent verification procedures.