Session based watermarking of media content using encrypted content streams

A method for establishing a playback session of media content at a client device, comprising:

• receiving a first encrypted content stream of the media content from a content server, the first encrypted content stream including a first plurality of content segments and having a first percentage of encrypted content;
• receiving a second encrypted content stream of the media content from the content server, the second encrypted content stream including a second plurality of content segments and having a second percentage of encrypted content different than the first percentage of encrypted content, each of the first and second encrypted content streams including different watermark information;
• receiving a unique sequence;
• receiving an expected encryption percentage for each of the first encrypted content stream and the second encrypted content stream;
• selecting consecutive content segments of the media content from the first plurality of content segments and the second plurality of content segments based on the unique sequence, wherein the selecting includes switching, at least once, between the first encrypted content stream and the second encrypted content stream;
• comparing an actual encryption percentage of a selected content segment with the expected encryption percentage for the selected content segment based on the respective content stream;
• and
• determining whether to render the media content by the client device based on the comparing of the actual encryption percentage with the expected encryption percentage.