Digital Invisible Watermark

First thing, I will ignore all bots that submit bids. So on your first line to me, type the answer of 3+3=

Second, feel free to make your bid sealed but do NOT do a bid just to chat and then say, whats your budget. Our conversation will end at that time.

I need a digital invisible watermark for images that will sustain the following methods of attack. I also need a way to decode the actual watermark. My server is Ubuntu. The decoding needs to be able to be completed via shell. Python/PHP ect can be used. The end goal is protection against these methods:

1. adding text on image
2. adding filled shape on image
3. minor crop
4. rotate
- flip-vertical
- flip-horizontal
5. minor resize
6. screen capture

Time Frame is 5 days.

I have no clue what the term "Provenance Watermarking" means but a friend mentioned I should look into that.

Now for the description that freelancer generated:
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I am looking for a freelancer who can help me create a digital invisible watermark for copyright protection.

Requirements:
- The watermark must be invisible to the naked eye.
- The volume of watermarked content will be less than 100 items.

Ideal Skills and Experience:
- Experience in digital watermarking and copyright protection.
- Knowledge of various algorithms and techniques used in invisible watermarking.
- Familiarity with image processing and manipulation.
- Attention to detail to ensure the watermark is securely embedded in the content without affecting its quality.
- Ability to provide a secure and reliable solution for copyright protection.