by the United States government, United States Code — Title 17, Chapter 8…
“ Appeal.—Any determination of the Copyright Royalty Judges under subsection (c) may, within 30 days after the publication of the determination in the Federal Register, be appealed, to the United States Court of Appeals for the District of Columbia Circuit, by any aggrieved participant in the proceeding under subsection (b) (2) who fully participated in the proceeding and who would be bound by the determination. Any participant that did not participate in a rehearing may not raise any issue that was the subject of that rehearing at any stage of judicial review of the hearing determination. ”
