Need help reporting foreign music royalties

Hi! I make YouTube Shorts for a living, and I'm partnered with a music company in Japan. The deal is that I use their music in my Shorts, YouTube pays them music royalties based on how many views my Shorts get, and the music company pays me half of the royalties earned. It seems like they don't have any kind of tax documents to send me, so how do I report this on my taxes?

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