In the music industry’s streaming battles, the fight extends to even the minutiae of copyright.

Apple, in a government filing on Friday, proposed simplifying the highly complex way that songwriting royalties are paid when it comes to on-demand streaming services like Apple Music, Spotify and Tidal.

According to Apple’s proposal, made with the Copyright Royalty Board, a panel of federal judges who oversee rates in the United States, streaming services should pay 9.1 cents in songwriting royalties for every 100 times a song is played. This formula would replace the long passages of federal rules for streaming rates, which often leave musicians bewildered about just how the money flows in streaming music.

But even in this seemingly innocuous proposal, which was not made public but was obtained by The New York Times, Apple’s target is clear: Spotify, its archenemy in streaming music. The proposal would significantly raise the rates that Spotify pays, and the filing includes lines that are clearly directed at Spotify and its so-called freemium model.

“An interactive stream has an inherent value,” Apple wrote, “regardless of the business model a service provider chooses.”