adopted and authenticated text

In the law of treaties, adoption and authentication are two distinct procedural stages that together close the negotiation phase and establish a treaty's settled text. They are codified in the Vienna Convention on the Law of Treaties (VCLT), opened for signature on 23 May 1969 and in force from 27 January 1980. Adoption (Article 9) is the formal act by which the form and content of the proposed text are settled; adoption at an international conference takes place by a vote of two-thirds of the States present and voting, unless by the same majority they decide to apply a different rule, while in other cases the consent of all participating States is required. Authentication (Article 10) is the subsequent act by which the text is established as definitive and unalterable — the moment after which a comma cannot be moved without renegotiation. Adoption fixes what the text says; authentication certifies that this is the agreed text. Neither act creates binding obligations: consent to be bound comes later through signature, ratification, acceptance, approval or accession (Articles 11–16).

Article 10 prescribes that the text is authenticated by such procedure as is laid down in the text itself or as agreed by the negotiating States; failing that, it is authenticated by the signature, signature ad referendum, or initialling by the representatives of the negotiating States of the text or of the Final Act of the conference incorporating the text. In practice authentication is often effected by initialling (apposing initials to each page), by signing the Final Act, or, in modern multilateral practice, by depositing an authenticated original with a designated depositary — frequently the UN Secretary-General under Article 102 of the UN Charter. Multilingual treaties typically specify which language versions are authentic and equally authoritative, governed by Article 33 VCLT on interpretation of plurilingual texts; the UN Charter, for instance, is equally authentic in Chinese, French, Russian, English and Spanish.

Concrete instances illustrate the sequence. The Rome Statute of the International Criminal Court was adopted at the Rome Conference on 17 July 1998 by a recorded vote of 120 to 7, with the authenticated text deposited with the UN Secretary-General. The Paris Agreement on climate change was adopted on 12 December 2015 and opened for signature at New York on 22 April 2016, its text authentic in the six UN languages. The VCLT itself, the governing instrument, remained in force in 2026 with over 110 States parties, though notably not the United States, which signs but has not ratified it and treats much of it as customary law. India acceded to the VCLT.

For the examination, this topic falls squarely within International Law / Diplomacy and Statecraft sections — UPSC GS Paper II and the optional Public Administration/Law papers, FSOT's diplomatic process questions, and CSS International Law. The classic question angle asks candidates to sequence the stages of treaty-making (negotiation → adoption → authentication → consent to be bound → entry into force) and to distinguish authentication from signature and ratification. Cite Articles 9, 10 and 11 VCLT precisely and avoid the common error of conflating authentication with the creation of binding legal obligation.