Replying to Avatar lemon

I'm learning about Steganography: the practice of concealing information within another message. More specifically, I'm learning about Least Significant Bit Steganography, which changes the color of a pixel in a parent image (in this case a meme) by an indistinguishable amount to communicate the information that is hidden.

Like an an invisible watermark.

Within this meme is a secret QR code that holds 10,000 sats worth of e-cash. The money is in the meme.

E-cash, secret messages, signatures, or even private keys (though I wouldn't recommend it) could be hidden in plain sight within an image.

So instead of sending long text strings like "cashuBo2Ftdmh0dHBzOi8..." you can just pay people in memes, which I think is pretty cool.
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JackTheMimic 1y ago

100% I love Steganography. I have heard people do cross reference common photographs for pixel deviation but, You can always make false positives which is really fun too.

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lemon 1y ago

It’s pretty interesting stuff! I’m trying to find ways to implement in fun or maybe unconventional ways

And I feel like e-cash/cashu could have some fun use cases here

Some of the videos I watched showed that the hidden image had degradation, but since this was just a simple black and white QR code it had no problem

And most memes are large enough where they can hide a significant amount of information so it seems like it has some potential