; and (II) such agreement shall be made available as required in proceedings before the Copyright Royalty Judges to establish or adjust the administrative assessment in accordance with applicable statutory and regulatory provisions and rulings of the Copyright Royalty Judges. (ii) Treatment of contributions Any such voluntary contribution shall be treated for purposes of an administrative assessment proceeding as a general offset to total costs of the mechanical licensing collective that would otherwise be recovered through the administrative assessment. Any allocation or reallocation of voluntary contributions between or among individual digital music providers or significant nonblanket licensees shall be a matter of private negotiation and agreement among such parties and outside the scope of the administrative assessment proceeding. (C) Interim application of accrued royalties In the event that the administrative assessment, together with any funding from voluntary contributions as provided in subparagraphs (A) and (B), is inadequate to cover current total costs of the mechanical licensing collective, the collective, with approval of its board of directors, may apply unclaimed accrued royalties on an interim basis to defray such costs, subject to future reimbursement of such royalties from future collections of the assessment. (D) Determination of administrative assessment (i) Administrative assessment to cover total costs The administrative assessment shall be used solely and exclusively to fund the total costs of the mechanical licensing collective. (ii) Separate proceeding before copyright royalty judges The amount and terms of the administrative assessment shall be determined and established in a separate and independent proceeding before the Copyright Royalty Judges, according to the procedures described in clauses (iii) and (iv). The administrative assessment determined in such proceeding shall— (I) be wholly independent of royalty rates and terms applicable to digital music providers, which shall not be