Solo competitors must provide the Adjudicator’s Secretary with full original scores of their music prior to the
performance. Competitors with accompanists must provide the Adjudicator’s Secretary with full original scores of their music, showing both solo and accompaniment parts in the proper key. All copyright laws must be observed. Photocopies or computer-generated copies will not be accepted unless they show legal authorization from the publisher or copyright holder or proof of purchase (receipt). OMFA reserves the right to disqualify any competitor presenting a photocopy or computer-generated copy. Please note that copyright/photocopy regulations also apply to all accompanists. Accompanists are permitted to play from photocopies as long as a copy of the original score is present, face up on the piano or under the piano bench.
Does IMSLP offer any sort of "receipt" or proof of authorization that can be used along with a PD score? It seems that my right to make use of something in the PD should be observed, too! Or, is there an applicable law, etc., that could be referenced?