A system and methods for facilitating transactions relating to slots in a content promoter's performance. The system allows content promoters to publish available slots in their performances and receive submissions from artists requesting their content be presented in those slots. The system facilitates transactions between promoters and artists using an escrow and “proof of play” system. The escrow system charges an artist in advance for content submitted to be presented, but holds payment of those charges until after the promoter has presented the content and proof of play has been confirmed. Proof of play may be directly confirmed by the artist, may be confirmed by the system, or may be provided to the artist in an audiovisual recording made by the promoter. The escrow and proof of play system helps protect promoters and artists against potential default by either party to the transaction.