file for PGSharp is a local data file used by the application to store information about Shiny Pokémon
If you want, I can:
Before diving into shiny.dat , it is essential to understand Pgsharp. Pgsharp is a modified version (modded APK) of the official Pokémon GO client. It is not available on the Google Play Store or Apple App Store; users must sideload it. Pgsharp offers features that Niantic’s official client does not, including: Shiny.dat File For Pgsharp