Small Youtube API Project - Verify Subscription to Channel from Video Link

Job ID: 34636720

Budget: $30 – $250 USD

I need someone with Youtube API expertise to complete a small project.

It starts with a link to any youtube video, for example: https://www.youtube.com/watch?v=KmjfauhF6VI

When a user clicks the link, it should open in a new window/tab. In the old window/tab, only upon return to that window/tab, the script should check if the user is currently subscribed to the video he just watched. If yes, just return true, if not then return false.

This probably also requires login / permissions from the user.

I hope this is clear enough, if not ask me directly.
Related categories: PHP JavaScript YouTube Google APIs