For what Stands ?si= in URL? [closed]


I notice that Spotify uses much in the URL ?si=, does anyone know for what stands this for?

Sometimes it is used for a simple URL which doesn’t require auth.

Example:

  • https://open.spotify.com/user/XXXXXXXXXXXX?si=XQUBhw3qMyuDpO6miBtRt0w
  • https://open.spotify.com/track/1LN0Ut0IBHSrx4Urexq8xb?si=T4-jVB7CSna3SXVnx6C1EA
  • https://open.spotify.com/artist/00Ybe80NUTFFjRA344FuVI?si=oYCgLzNcR5ymUV3cyJ37pg