I don't know if I'm on a track or not at all and I'm doing this as I can, but on the forums dealing with this puzzle I found nothing like this.

- On photoshop, since the original image by making a threshold in value 1 and de-zooming of the image I get this image that I call "A" with regular points
https://imgur.com/uJe9tET

- In the same way with a threshold at 255 I get "B" which reveals dots and the outline of the QR code at 0.1BTC
https://imgur.com/8P6hOTu

- By adding A + B + The original image I notice that the points appear in some cells of the image as well as on some of the curves of beziers. Moreover the points of A appear on black background and that of B on white cells -----> it is possible that I didn't reveal all the points which should appear on black or white background.
https://imgur.com/ntHB83M

- Always starting from the original image, doing Image / Settings / Equalize then a threshold to 255 and finally Zoom Out I isolate some points that appeared on B. I thus call this image "C"
https://imgur.com/p5CRL5G

- By making A + B - C and by putting colors in them, we can distinguish some kinds of regular grids intertwined
A in red
B in Blue that seems to have other grids to isolate
C in green
https://imgur.com/D627qSc

This last result makes me think of this puzzle in the same genre:
https://steemit.com/bitcoin/@mmorsl/solution-of-the-bitcoin-crypto-puzzle-level-4-by-zden

I suppose that if we connect these points and grids with the Béziers curves we must obtain something. I don't know if it has something to do with the 0.2BTC wallet just discovered. For now I'm blocking
If it helps someone, don't forget me if you find something