; and (cc) the amount of any voluntary contributions by digital music providers or significant nonblanket licensees in relevant periods, as described in subparagraphs (A) and (B) of paragraph (7). (iii) Initial administrative assessment The procedure for establishing the initial administrative assessment shall be as follows: (I) The Copyright Royalty Judges shall commence a proceeding to establish the initial administrative assessment within one year of the enactment date by publishing a notice in the Federal Register seeking petitions to participate. (II) The mechanical licensing collective and digital licensee coordinator shall participate in such proceeding, along with any interested copyright owners, digital music providers or significant nonblanket licensees that have notified the Copyright Royalty Judges of their desire to participate. (III) The Copyright Royalty Judges shall establish a schedule for submission by the parties of information that may be relevant to establishing the administrative assessment, including actual and anticipated total costs of the mechanical licensing collective, actual and anticipated collections from digital music providers and significant nonblanket licensees, and documentation of voluntary contributions, as well as a schedule for further proceedings, which shall include a hearing, as they deem appropriate. (IV) The initial administrative assessment shall be determined, and such determination shall be published in the Federal Register by the Copyright Royalty Judges, within 9 months of commencement of the proceeding contemplated by this clause. The determination shall be supported by a written record. The initial administrative assessment shall be effective as of the license availability date, and shall continue in effect unless and until an adjusted administrative assessment is established pursuant to an adjustment proceeding under clause (iii). (iv) Adjustment of administrative assessment The administrative assessment may be adjusted by the Copyright Royalty Judges in a