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Original Image

It appears blank, but the bottom half is corrupted, as shown below. We know it is due to an extra 6 bytes in second png chunk.

Solution

We have tried to use table from XRedy2i to find extra bytes, but it turned out to be irrelevant. Actually the useful table was in figure_4.png from the ligature folder download.

Go to 535th line of corrupted png chunk, there is 23 bytes in it. Green checkmarks in figure_4 show you values of bytes which you need to keep, 6 extra bytes, values of which are not shown in table, are the ones which you need to delete.

After deletion, the png file will provide link in clear: c7jsCqN