Procedure for Registration of Works and Contract 23.—(1) Application for registration of works in the Registrar’s office shall be optional. It shall serve as a prime facie proof of creations and authorship of the work in case of conflict or legal proceedings. (2) Application for registration of contracts of transfer of author’s economic rights to a user shall be obligatory. It shall be a prime facie proof of the lawfulness of exploitation of a work in case of conflict or legal proceedings. Application for Registration 24. Application for registration of a work and contract shall be addressed to the Registrar at the head of the Corporation and such application shall contain the following: (a) the registration application form according to the model specified by the rules; (b) the full name and address of applicant and, where the applicant’s address is outside the Sudan, the name and address of his agent in the Sudan; (c) a duplicate, a photographic copy or a true copy of the work or contract; (d) a statement ascribing the work to the applicant and such statement shall be according to the model specified in the rules; (e) the date of making or publication of the work or of making the contract; (f) any other details or statement as may be specified by the rules. General Register 25.—(1) For the purpose of this Act, the Registrar shall establish a general register which shall contain the following: (a) registration of a work and any contract relating to it; (b) works and contracts that shall be distinguished by number according to the order of registration and classification; (c) a separate file for each application of a work or contract in addition to a duplicate, true or photographic copy of the work or contract, the name and address of the author or his agent and the user in the Sudan; (d) the period of protection prescribed and the date on which such period starts to run and the date of expiry thereof (if possible); (e) any correspondence, contract or judicial decision concerning a work; (f) any other information relating to the work.