Twitch was bought by Amazon in 2014 for one Billion, all the source and data just leaked for free. This includes:

Streamer payouts over 3 years,
The entirety of twitch.tv, with commit history going back to its early beginnings, as well as the mobile, desktop and video game console Twitch clients.

There's even code for various proprietary SDKs and internal AWS services used by Twitch, and every other property that Twitch owns including IGDB and CurseForge

Also included is an unreleased Steam competitor from Amazon Game Studios and the Twitch SOC internal red teaming tools (lol)