缔约方在HCCH网站列明“competent authorities”(主管机关),通常为内政/司法/外务部门或各州级的Secretary of State。办理须向文书签发地所对应的主管机关申请(HCCH 各缔约方主管机关列表:https://www.hcch.net/en/instruments/conventions/authorities1/?cid=41)。
美国实例:州政府负责签发州颁文件的apostille;联邦级文件由美国国务院办理(US Department of State,文件认证页:https://travel.state.gov/content/travel/en/records-and-authentications/authenticate-document/apostille.html)。
U.S. Department of State — Authenticate a Document / Apostille:https://travel.state.gov/content/travel/en/records-and-authentications/authenticate-document/apostille.html
UK Government — Get a document legalised(Apostille):https://www.gov.uk/get-document-legalised