Volume 2171, A-27531 (i) The offering, delivering or accepting, by whatever means, a child for the purpose of: a. Sexual exploitation of the child; b. Transfer of organs of the child for profit; c. Engagement of the child in forced labour; (ii) Improperly inducing consent, as an intermediary, for the adoption of a child in violation of applicable international legal instruments on adoption; (b) Offering, obtaining, procuring or providing a child for child prostitution, as defined in Article 2; (c) Producing, distributing, disseminating, importing, exporting, offering, selling or possessing for the above purposes child pornography as defined in Article 2. 2. Subject to the provisions of a State Party's national law, the same shall apply to an attempt to commit any of these acts and to complicity or participation in any of these acts. 3. Each State Party shall make these offences punishable by appropriate penalties that take into account their grave nature. 4. Subject to the provisions of its national law, each State Party shall take measures, where appropriate, to establish the liability of legal persons for offences established in paragraph I of the present Article. Subject to the legal principles of the State Party, this liability of legal persons may be criminal, civil or administrative. 5. States Parties shall take all appropriate legal and administrative measures to ensure that all persons involved in the adoption of a child act in conformity with applicable international legal instruments. Article 4 1 . Each State Party shall take such measures as may be necessary to establish its jurisdiction over the offences referred to in Article 3, paragraph 1, when the offences are committed in its territory or on board a ship or aircraft registered in that State. 2. Each State Party may take such measures as may be necessary to establish its jurisdiction over the offences referred to in Article 3, paragraph 1, in the following cases: (a) When the alleged offender is a national of that State or a person who has his habitual residence in its territory; (b) When the victim is a national of that State. 3. Each State Party shall also take such measures as may be necessary to establish its jurisdiction over the above-mentioned offences when the alleged offender is present in its territory and it does not extradite him or her to another State Party on the ground that the offence has been committed by one of its nationals. 4. This Protocol does not exclude any criminal jurisdiction exercised in accordance with internal law. 249